Mercedes y74 pressure control valve

Normal value of Y74 is 21% to 29% at idle. CDI control unit, The PCV was checked and the MB specialist said to me that the engine ECU was at fault!!, at £785 +vat +coding i looked at other options. - Rail pressure variation -530. Checked with Xentry, all components (controllers, sensors) works fine. Check electrical connectors of the CDI control unit (N3/30) for the presence of any diesel fuel. I tried to change the y94 valve, but without effect. This code is good. Short to earth PCV, 2. If not, maybe the injectors have a problem ( nozzle). Y74 (Pressure control valve) Analogue-digital converter Value is below limit. - Coolant temperature 74℃. Lou. #1 · Mar 8, 2009. Oct 12, 2009 · 3. Poor starting from cold, whether it was overnight or a prolonged stop, eg. Mercedes code is same, there must be to more numbers after 8. I need to change mine (06 320CDI) so can anyone shine Apr 29, 2012 · Most likely your problem is in the Y74 (Pressure regulator valve) which is on the rail, and would be subject to the highest vibration amplitude. smaller valves run $70ea and I have plenty to spare. CDI 3-Common Rail Diesel In-jection3 (CDI3_UP) (E (211)) 2048 (001) Rail pressure monitoring via volume control valve The pressure reduction during deceleration is implausible. i came out with this solution because i have read other forums with related or same problems. Y74 Pressure control valve Y94 Quantity control valve P07. Energize the fuel pump by bypassing the fuel pump relay; after 5 minutes, the control pressure should be 3. - Detach coupling at component Y74 (Pressure Feb 1, 2024 · P0191 Mercedes: Fuel Rail Pressure Sensor Circuit Performance; P0015 Mercedes: Camshaft B position timing over retarded (Bank 1) P0718 Mercedes: Input/Turbine Speed Sensor Circuit Intermittent in automatic transmission; P0190 Mercedes: Fuel Rail Pressure Sensor Circuit; P1335 Mercedes: CKP Circuit Jan 19, 2010 · Engine, Drivetrain, Fuel and Exhaust Mar 11, 2009 · B4/6 is the fuel rail pressure sensor. Components checked and changed as follows. Decreased Fuel Efficiency: As the pressure control valve malfunctions, it can adversely affect fuel delivery and, subsequently, fuel consumption. Let me know if you need any further information. Stop the engine and remove the air distributor cover of the duct sleeve and the cylinder head cover trim / air cleaner assembly (see chapter Power supply and exhaust systems ). The valve for regulating the fuel supply to the injection pump is fixed on the flange of the injection pump. P1663 Y74 (Pressure control valve) The signal voltage is too high. I cannot see what the ECU is commanding but based on MB's overview the Y74 (Pressure Relief Valve) should be closed and there should be NO fuel coming out via the Y74*. Oct 15, 2023 · In this comprehensive guide, we will discuss the symptoms of Mercedes P131F, the tools needed to solve it, the steps to fix the issue, the Mercedes models affected by this error, and conclude with some key takeaways. the EPC MIL lights up while driving i test it by scanner its show this fualt code P2021 . 1 (855) 347-2779 · hi@yourmechanic. Dec 20, 2019 · At idle B4/6 rail pressure shows 243. turn the key «ignition» into position 0. CDI Fuel Pressure Regulator / Y74 Proceed with operation step 5. Nov 30, 2016 · 8 10-13-2016, 03:07 AM. In order to determine the cause you are going to need to do some testing, I have enclosed the steps in the link below, copy and paste the steps to your browser to open and view them. Dec 11, 2023 · P11A4 Mercedes: The lower limit value of component Y74 (Pressure control valve) was dropped below/not reached Mercedes Engine codes Benjamin December 11, 2023 3 min read Y74 Pressure control valve P07. P1664 Electric heater booster equipment fault . if it is not empty then you need to check power supply to pump and Ad blue control module. GET A QUOTE. pressure regulator comes with the fuel rail A6420702195. Fuel Pump Pressure Regulator Control Valve For Mercedes Benz M-Class M270 M400 400 CDI 1997-2000 Is this y94 defective or wrongly chiptuned And why injection is bit high on idle MHH AUTO Page DRV – vanne de contrôle de pression à rampe commune, pour MERCEDES BENZ C 200 CDI C 220 CDI C 270 CDI A 6110780549 2015 C200 Mercedes Benz p1190 Y74 pressure control valve #shortvideo #viralvideo #shorts #short - YouTube Pressure Regulator Sensor/ 0281002827 0281002985 /Common Rail Pressure for MB Replacement Spare Parts - Walmart. ) Fuel Pump "A' Control circuit Open What I've accomplished so far: New turbo charger, new spark plugs, new coil packs. Test sequence - Switch off ignition. sorry on delay i was traveling. . Y94 is the quantity control valve. The fuel pressure is goverened by the high pressure pump, which is driven off the engine. Oct 15, 2021 · Oct 15, 2021. I had a bad power supply wire (red with blue stripe) checked for continuity, but Fuel control valve (Y94) together with the pressure control valve in the TKVD (Y74) regulates the fuel pressure in the TKVD (M41) and cuts off the fuel supply to the injection pump plungers when the engine is stopped. Oct 17, 2016 · I have been through the testing and it seems to confirm that the pressure control valve Y74 is faulty. Drained the oil and Aug 11, 2016 · The quantity control valve (Y94) meters the fuel between the transfer pump and the high-pressure pump to avoid wasting energy in high-pressure pumping more fuel than is required. Mar 6, 2007 · I Have S400 2001 with twin turbo engine . - Fuel temperature 47℃. I know the general area of where the High Pressure Fuel Pump is located - but I don't know where to start in terms of what needs to be removed in order to get access to it. Keep in mind the N3/9 actively controls the engine smoothness up to 1200 RPM. Lorsque la rampe Common-Rail est en place, on n'est pas assuré du montage sans défaut de la valve régulatrice de pression (Y74). The parts and labor required for this service are Rail pressure monitoring via pressure control valve The measured pressure is implausible in relation to the power consumption of the pressure regulator valve. 1L (facelift 204). have a good weekend. I'm guessing the injector correction value at the 600bar point has reached its max. Vito 2005 115 CDI W639, Saab 93 TiD. The pressure regulator valve controls the high pressure circuit together with the quantity control valve. **Initial Diagnosis** Dec 3, 2017 · 2008 Mercedes R320 diesel. May 22, 2011 · At that point I take the key out and start the car agin no problem. From there the quantity control and rail pressure sensors chatter to the ECU to provide the necessary running values. 11A300 - Component Y74 (pressure regulating valve) has a short circuit to ground) Oct 4, 2023 · 2008 ML320 CDI need fuel pressure control valve (y74) part number and source. 118200 - Component Y94 (Quantity control valve) has an open circuit. Dec 3, 2023 · Mercedes-Benz Sedan / Coupe / Wagon Forums. bosch common rail fuel pressure sensor & Mercedes-Benz C220 Cdi common rail sensor Sandy(SEP) Whatsapp/Tel:008618659458099 Our company-China Lutong specialize in diesel engine parts. Jan 26, 2024 · Your Mercedes. Feb 11, 2024 · – Specialty tools as specified for the pressure control valve service in the repair manual – Replacement parts, which may include a new pressure control valve (Component Y74) Effective Fixing Strategies. Jan 27, 2024. Quantity Control Valve — Faulty quantity control valve Y94. Reg. Do not forget to replace the sealing elements. W211 E-Class. Hi Bob, It has become self evident that the starting issue is a function of temperature. Mercedes E320. 5 posts · Joined 2009. But low system pressure indicates that pump is not working. 207V with pressure of 318. I’ve checked the pressure actuator and it works, it also checks 3. AR07. ((DEF@Not Plin de viață Inspecţie eu insumi mercedes y74 pressure control valve cupru Dormit prezentare Fuel pressure regulating valve located on the end of the fuel rail on the T1N Sprinter with the OM647 engine and the Mercedes E-Class with the OM648 P1663 fuel pressure regulator Y74 . O-Ring Kit part number: A 014 997 70 45 4. Add to Cart. Jan 4, 2007 · BenzWorld. There is either two problems on my car, FPR, or leaky injectors. 0 OM642. - Detach coupling at component Y74 (Pressure Bosch Common Rail CR Fuel Pressure Regulator 0281002698 Fuel Pressure Control Valve Regulator for Mercedes Benz Sandy(SEP) China Lutong Parts Plant whatsapp/tel:008618659458099 We are a manufacturer specialist in diesel injection parts for about 28 years. 920/940/950 with code (494) USA version, Jan 6, 2018 · ok since you can see those values of the Y valves here is some info. On the Bosch system there are 3 corrections per cylinder, not sure if the same on the Delphi. Check also, at idle, fuel quantity ( 3-9 mg/). Jan 19, 2018 · It IS a fuel pressure regulator since the PWM signal it gets directly regulates the rail pressure 30 sec after start and above 20C (<30sec after start and <20c the Y74 does the regulation) which is unique to Mercedes since all other applications of the cp3 (cummins, duramax, VM motori) that I have seen the Y94 Volume Control Valve (AKA Fuel Pressure regulator valve Y74 & Quantity control valve Y94, How it's work on Mercedes ML350 CDI W164 - YouTube 1pc Fuel Pressure Control Valve Fuel Pressure Regulator Oem 0281006037 31402-2f000 314022f000 For Hyundai- Kia- - Oil Pressure Regulator - AliExpress Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. Always find the same ( and that is on both cars) DTC P2021 stored not current= check component y74 (Pressure control valve current) Rail pressure readout too large. I put B11/4 in the mix just in case there could be a wiring issue (transient flicker). - Detach coupling at component Y74 (Pressure If necessary, the pressure control valve (Y74) can be removed from the clamped in a vice with soft sponges line / valve assembly by reversing of the fastening bolts (2). With 28 years produce experience with capacious Dec 28, 2023 · P0191 Mercedes: Fuel Rail Pressure Sensor Circuit Performance; P0015 Mercedes: Camshaft B position timing over retarded (Bank 1) P0718 Mercedes: Input/Turbine Speed Sensor Circuit Intermittent in automatic transmission; P0190 Mercedes: Fuel Rail Pressure Sensor Circuit; P1335 Mercedes: CKP Circuit 2151 (001) Y74 (Pressure control valve)Analogue-digital converter Value is above limit. This tester valve is functional, just has a piece of the plastic connector chipped off (cosmetic). Difficulty Shifting Gears: The short circuit can disrupt the pressure control valve’s functionality, leading to erratic gear shifts or failure to change gears smoothly. – Poor Fuel Economy: An issue with the pressure control valve can result in improper fuel usage, negatively impacting fuel economy. $175. I cannot see how, without any changes to fuel trim, that the pressure can go from 15 bar to 464 bar in 1/8th of a second. After the control is moved to y94, rail pressure go high and engire starts working roughly. Y74 is the pressure control valve. Then Y74 setting controls which pressure it needs to open. Please if someone has xentry if you can check Sep 14, 2011 · MB star diagnosed fault P1190-128 Y74 pressure control valve , this in turn gave 3 options, 1. To be sure if the Y94 valve is defective, detached the electrical connector and see if the problem persists. - Fuel temp. Has to be Y94 or Y74 valve. Complete HP p … read more Dec 28, 2023 · Step 3: Check the Pressure Control Valve. Mar 1, 2023 · [Y74] Pressure regulator valve [Y94] Quantity control valve [Y76] Injectors; I think that monitoring/capturing data for B37, B11/4, Y74 and Y94 should be sufficient. Usually its caused by a sensor giving a spurious value as opposed to the fuel pressure actually being too high. Anybody here have a part number or link to a source or Aug 8, 2020 · Guys, I get confusing answers on this. Have researched but cannot find any guides on removal/install for a Y94 valve on the Jul 7, 2023 · All these proportional valves are PWM controlled. See picture below. I pulled and cleaned my injector nozzles in the ultrasonic and checked the spray patterns after cleaning the car won't start at all. $183. Remember it is pressure control valve, not flow control. https://dl Test signal voltage of component Y74 (Pressure control valve). But Thank you for the Website for the FPR, very low price. 701) 88 hp Diesel 2003 - Jul 17, 2020 · There wasn't enough to complete one valve block. Fluid tank with pump is located under thunk floor Jun 1, 2022 · I plugged the code reader in the fault relates to the fuel rail Y94 quantity control valve at the end of the fuel rail. It seems to be outside the specified values (20-30) actual value is 16. 69 Degrees C for B19/11 (Temperature Sensor Upstream of Turbocharger) Jul 13, 2018 · valve on pump is A6420740284. Mar 8, 2009 · b-benz Discussion starter. E220 2005 2. Take a look A great reminder video from my shop days. ((DEF@Not Exist)) CDI 3-Common Rail Diesel In-jection3 (CDI3_UP) (E (211)) 2052 (001) Rail pressure monitoring via pressure control valve The measu-red pressure is implausible in relation to the power consumption of the pressure regulator valve. #4 · Dec 19, 2009. Not so easy to access on OM651 2. Jul 3, 2022 · CDI codes after reset and re-start. Then no starting. The larger valves run $100ea and I'm currently out. 1D. I found this great video on youtube, it's a k-jet system procedure performed on a MKII GTI. Aug 11, 2023 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Apr 25, 2024 · Result is : MIL is on, code: 2020-001, "Rail pressure monitoring : Y74 (Pressure regulator valve) . 8 bar. My 2007 Bluetec e320 was hard starting. 16-2768-11 Location Task The pressure regulator valve is screwed in at the front in the left rail. To do so, disconnect electrical connectors from CDI control unit (N3/30). If these values are not obtained check the power at connector. Came in as a no start. Open pressure regulator valve, except OM 642. I've replaced it with a Bosch replacement from a reputable diesel specialist (not Ebay etc) I also replaced the fuel pressure sensor at the other end of the fuel rail. " The pressure regulator (Y47) and the quantity control valve (Y94) have already been replaced. Feb 12, 2024. Fuel quantity and fuel pressure, both on opposite fuel rails. Jun 28, 2018 · It’s in a no start condition right now. org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. Nov 24, 2021 · I have W212 Om651 250 cdi 2009 engine and every day in winter after short drive rail pressure is dropping and jumping in idle with rpm, but when i startup the car and it sits for few mins in idle no issues but after drive that happens. 03-P-1020M. the EPC light come in the 19 High pressure pump 19/1 High pressure pump drive 21 Rail 70 Fuel filter 80 Fuel tank 80/4 Suction jet pump 80/5 Swirl pot 80/11 Fuel strainer B4/6 Rail pressure sensor B50 Fuel temperature sensor M3 Fuel pump Y74 Pressure regulator valve Y76 Fuel injector Y94 Quantity control valve NOTE: Ultra low sulfur fuel must be used, if not white smoke 2151 (002) Y74 (Pressure control valve) Analogue-digital converter Value is below limit. com Mar 1, 2023 · After 30 sec from starting there was still a LOT of fuel coming out at the test target of 1,400 bar: control is passed to the Y94 (Quantity Control Valve) after 30 seconds. Apr 2, 2014 · 1 st check if AD blue tank is not empty. P1664 electric heater output stage fault . Max pressure the entire time is 10bar and verified by 100+psi rating with manual guage. 055) 252 hp 2012 - 2015 Pressure control valve common rail system suitable for Mercedes W166 ML 300 4-matic (166. Best regards, Paul Dec 17, 2009 · 80 posts · Joined 2009. Perform factory guided test for each control valve. of > 20° - Carry out the test within 30 s. Ideally you will just watch it on Star, and see if all the values are within range. You should be able to see the corrections with the diag tool. 960/962 Moteur 628. Ask Your Own Mercedes Question. Jan 19, 2022 · How to replace BOSCH fuel pressure sensor on 2007 OM642 Bosch Fuel Pressure Regulator | 6480700046. - Detach coupling at component Y74 (Pressure Test signal voltage of component Y74 (Pressure control valve). #3. Signal wire OPEN CIRCUIT 2501 (001) Check component Y74 (Pressure control valve). The pressure control valve may need testing to ensure it operates within the specified parameters. Sep 17, 2020 · mercedes y74 pressure control valve bosch & common rail pressure control valve Sandy(SEP) China Lutong Parts Plant whatsapp/tel:008618659458099 Our products are very popular in many countries and Jul 6, 2018 · Mercedes Sprinter EDC fuel Rail pressure valve Monitoring sensor P1187 Error code too low common rail fix repair Sep 29, 2023 · 2. 3. 90 bar - is this too low? Y74 pressure control valve 18. Finally, start the engine and check the components of the power system for signs of leaks. Mercedes-Benz ML350 Fuel Pressure Regulator Replacement costs starting from $313. So its actually pump which defines how much flow is delivered to rail. Nov 24, 2021 · New to Mercedes and trying to locate the Y94 Quantity Control Valve on a 2014 E250 CDI. Feb 1, 2024 · – Reduced Engine Performance: Because the pressure control valve is tied to fuel delivery, an open circuit might lead to poor engine performance. Short circuit to positive Jun 9, 2021 · hi i have 2005 vito 109 cdi i get the engine managment light on when i accelerate turn it of goes away but comes back everytime ive put the computer on and get this code 2047 -1 rail pressure monitoring volume control valve values below range, and idea what part i need to change please advice is much appreciated Jan 27, 2024 · Your Mercedes. MERCEDES-BENZ M-Class W166 ML 300 : Fuel pressure regulator suitable for MERCEDES-BENZ ML-Class (W166) ML 300 3. Apr 5, 2022 · Hello, I have a problem with my w211 220 CDI Mercedes. No issues when temp is 20+ celsius. Thread starter. After the start of the engine y74 valve on the rail controls the fuel and a few seconds after engine starts the control is moved to y94. - Rail pressure 802 bar. Apr 27, 2010 · P1187-032 Rail pressure monitoring Control variation P1664-002 Electric heater booster Equipment fault P0100-001 B2/5 (Hot film mass air flow sensor) The signal voltage is too low P1190-008 Y74(pressure control valve) Open circuit in wiring Signal wire P0190-002 B4/6 (Rail pressure sensor) The signal voltage is too high. 9. #2. Complete HP pump and drive mounting assembly from known good vehicle. 963 Pour la dépose et la pose de la valve régulatrice de pression (Y74), il faut systématiquement déposer le bloc de valves. It shows drilling the cover off the WUR to reveal the adjustment screw and testing and modifying the control and system pressure. P1664 electric heater short Moteur 628. . Flow over Y74 is the defined by pressure difference over control edge (area) by orifice equation. Vito van 108 CDI, I have been reading endlessly all the posts about the limp mode problem and today decided to try and fix it myself, there is a valve which regulates the boost pressure from the turbo actuator, it is located underneath the van near the drivers side wheel arch 2151 (002) Y74 (Pressure control valve) Analogue-digital converter Value is below limit. CDI 3-Common Rail Diesel In-jection3 (CDI3_UP) (E (211)) Mar 24, 2012 · P1190-128 y74 (Pressure control valve) N3/9 (CDi control unit) STORED P1481-032 Glow plug failure Cylinder 6 STORED (the light did stay on for a while but seemed to cure its self) P0100-064 B2/5 (hot film mass air flow sensor) Plausibility 3 STORED P1192-032 P1192-064 Mar 15, 2012 · Mar 16, 2012. It would stumble start now it just stumbles won't start without fluid and when the fluid is gone it dies. ↓ Proceed with operation step 4. ) eventually, replace Y94, the fuel quantity control valve (about Euro 50 for the Bosch part) Jan 14, 2023 · 1. Includes rail. 4. Rail pressure too high. add fluid if empty. Short circuit to positive Mar 1, 2023 · And within 1/8th of a second, and with no changes to the Y94, Y74 or pedal request (still zero) the ECM reports pressure at 464 bar (the mV had just bumped up to 1524 mV at the 15 bar point). Egr circulator/cooler had to be removed, and some parts of the intake manifold also. P1663 Y74 (Pressure control valve) The signal voltage is too low. Consult your service manual to find the correct resistance values for the valve. Normal value of Y94 is 36% to 42% at idle. Once you’ve gathered your tools and confirmed the P11B5 error, follow these strategic steps to address the issue: 1. On the pressure sensor offset test I get voltage 1. observe relevant values on the data stream at idle for pressure control valve Y74, and quantity control valve Y94. Y74 - Pressure control valve 1. Pressure control valve common rail system MERCEDES-BENZ Vito Minibus (W639) Diesel, Petrol, Electric car models MERCEDES-BENZ VITO W639 109: Fuel pressure regulator MERCEDES-BENZ Vito Minibus (W639) 109 CDI (639. * After 30 seconds of the engine RUNNING control is passed to the Y95 (quantity control valve). - Duty cycle of quantity control valve 58%. Thank you very much, enjoy your weekend! you too sir. ) Fuel Rail system pressure to low - Bank 1 P0087 3. ) P1190 - Y74 (pressure control valve) Oil related? 4. If this is operating optimally, the metering of the fuel maintains the required pressure in the common rail and the pressure regulating valve (Y74) has nothing to do. Limp mode activated. P1190 Fuel pressure control valve N3/9 (CDI control module) P1190 Fuel pressure control valve Open circuit: P1190 Fuel pressure control valve Short circuit: P1190 fuel pressure regulation valve Y74: P1192 B40 (Oil sensor (oil level,temperature and quality)) Oil level is implausible. Y74 (Pressure control valve) Analogue-digital converter Value is above limit. I had to use one of my "tester" valves to complete the set. If there is diesel fuel in the electrical connector of the pressure regulating valve (Y74/6). Problem solved! It was the Quantity control valve (QCV) next to the high pressure fuel pump. I’ve got a y74 open circuit and a y94 open circuit as codes. If these sensors encounter a “plausibility error,” it may trigger the diagnostic trouble codes (DTCs) P118D or P12BC. We adjust our step ,indraught the advanced producing technique and high precision equipment to improve our quality with the opportunity and Oct 13, 2017 · 2011 sprinter 2500 3. 2151 (004) Y74 (Pressure control valve) Analogue-digital converter Signal Fault 2500 (004) Check component Y74 (Pressure control valve). I understand that this valve is not supposed to be sold separately anymore, however I am sure there is still a source for it somewhere, right? Trying to avoid spending an extra $700 on a rail that I don't need. Nov 24, 2015 · Malfunctioning Pressure Control Valve — Faulty pressure control valve Y74. 99. You won't see anything on that the rail pressure data. Read FAQ. With high rail pressure faults, it is a good idea to check the quantity (Y94?) control valve, if it is blocked or failing it can lead to high rail pressure codes. I have already repalced both the pressure sensor and the and the control valve same result. 32. But I see the regulator can be purchased separately. 00-Z-0001-01A risk of poisoning caused by inhaling and Only pour fuels into suitable and appropriately swallowing fuel and risk of injury to eyes and marked containers. Figure legend - Y74 (Pressure control valve) Special tool - Adapter cable220 589 00 99 35 Test prerequisite - Operate engine at idling speed. Installation is in the reverse order. MB shop says I have to change the whole Rail (with regulator) and that a separately purchased regulator cannot be correctly put on an existing rail. 16-2606-03 Removing Danger! Risk of explosion caused by fuel igniting, No fire, sparks, open flames or smoking. And "the rail pressure sensor is faulty". Changed quantity control valve, fuel pressure sensor and fuel pressure regulator (the whole fuel rail). Y76 are the fuel injectors . 9 ohms across poles 1 and 2. Nov 18, 2019 · 2008 Mercedes R320 diesel. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! Jan 29, 2013 · so there is a programm in diagnostics called "Check high pressure control" which give me these results at idle (about ~880) : Check high pressure control. The injection system of a diesel engine with high pressure fuel pump (EVE) of a distributive type and electronic control (engine 604) Mercedes W210 (1996-2002) ☛ Removing and installing fuel injection control module (ECM ME-SFI) Mercedes W463 (1999-XXXX) ☛ Removal and installation of the fuel injection control module Mercedes W163 (1997-2005) Nov 3, 2023 · 2007 om642 low common rail pressure. Feb 7, 2024 · Mercedes vehicles may be equipped with an integrated health monitoring system that continuously checks the status of the vehicle’s exhaust and emissions control system. Our main products include Head Rotor (VE Pump Parts), Injector Nozzle, Plunger, Delivery Valve, Control Valves, Injectors, Cam Disk, Repair Kits,Feed Pump and more. Apr 4, 2022 · This test is suitable for most electric diesel pressure regulator valves, in this case they are from bmw e46 320d, but this test is suitable for many other v Oct 12, 2009 · Your Mercedes 124 300 CE 24 Coupe, C220CDI, Porsche 911 4s, Dolomite sprint, P2021 check component Y74 (pressure control valve) current/rail pressure Readout too Oct 15, 2023 · A weak Y74 will dump fuel past if under high pressure, and it's This that MB specifically concerns as being a relevant test, not lower fuel pressures from cranking. 4-3. In Stock. Using a multimeter, measure the resistance of the valve and compare it to the manufacturer’s specifications. AS47. Changed: Y94 Quantity control valve,Y74 Pressure control. I sent the ECU away to be tested to lynx code EDC ( electronic diesel control) 03779 01 refers to fuel pressure too low in the common rail=== causes --blocked fuel filters, blocked vent control-- failing high pressure pump--- It is a specific MAN code and should be investigated by an accredited diesel shop with man experience Dec 23, 2023 · Differential pressure sensors in Mercedes vehicles monitor the pressure difference across the Diesel Particulate Filter (DPF) to manage regeneration cycles and maintain performance. #4. ) P060A - Engine oil pressure control circuit open 5. Engine starts with Y74, but after a short time switches to Y94. ”. Buy in monthly payments with Affirm on orders over $50. Dec 10, 2007 · Connect the vehicle harness connector to the control pressure regulator. ) replace the tiny green O-ring and packing washer on the fuel pressure control valve, Y74, as this was leaking in my case and causing the engine to die unexpectedly (about Euro 10). If there is current at the plug, replace the control pressure regulator. ) P1CCF- Fuel Pump Low Pressure Fuel DTC's 1. Still no high side fuel pressure. 51 mm^3/hub The only other strange readings I can find on live data are:-226. Test signal voltage of component Y74 (Pressure control valve). 055) 249 hp 2012 - 2015 2023 (001) Rail pressure monitoring via pressure control valve The rail pres-sure is too high. The rail pressure is too high for the closed pressure regulator valve. 27% Y94 Quantity Control Valve 27. Also the Y74 contains a spring, magnet, coil, and a ball seat. Such systems would be capable of catching problems before they escalate to the point of triggering a fault code, allowing for preventative maintenance and potentially avoiding Test signal voltage of component Y74 (Pressure control valve). com. Leaves warehouse within 1-2 business days. six hours, was enough for the engine to cool down and give a poor juddering start. 11A100 - Component Y74 (pressure regulating valve) has an open circuit. I change the (Y74) Pressure control valve but the problem is still ,, then i see if i remove the socket for rail pressure sensore. P1664 electric heater fault . P1664 electric heater open . 63% Current Injected Quantity 13. Open circuit PCV or. 143400 - Short circuit was detected at pin 1 of circuit 87. Only code was low fuel pressure via quantity control valve. 6 bar. Jul 2, 2009 · Video: k-jetronic adjusting warm-up valve, system & control pressure. 5 4-matic (166. ns fu pq ex ge jl ep jl vi au