A typical fuel volume control valve and high pressure pump Courtesy: slideshare. Clear the fault code to see if it returns. It's been suggested that I try changing the coolant temp sensor as these often give a similar problem on Passats will keep you posted cheers S40 2. This is quite a tricky error code to diagnose and fix, thus, you must get the services of a professional technician to have it properly addressed. I am desperate for help. I couldn't believe it but it is absolutely true. The test light should illuminate.
Depending on your vehicle, it may take several hours to determine the root cause and repair the faulty component. To minimize parasitic loss, that is power lost to operate components, newer pumps have inlet metering capabilities to increase engine power output and fuel economy. If the values do not match, then a further diagnosis is required. Stationary it will rev freely round to 4000 rpm plus, but driving it will only go smooth-ish if I just tickle the throttle I haven't touched anything so I imagine the codes will be as previous Any ideas cheers I am experiencing similar problems with my 2004 V50 2. It also may be related to other codes, such as: P0001, P0003, or P0004. When the computer detects a pressure it is not commanding to the fuel pump, it will set a Check Engine Light.
I'm in Leighton Buzzard, Hemel or Chesham most of the time. A qualified technician can read the data from the advanced scan tool to determine when the problem occurred, or if it is still occurring. Turns out volvo did not put a serviceable fuel filter on the certain v70's. Qualified technicians can easily read data from their advanced scan tools to determine when and how the problem occurs. The valve meets the demands of the engine by adjusting the low pressure side. Does it ever stall right away when cold, or does it have to be with the engine running for some time? On this same vehicle about half the time I have to pump the accelerator once before turning it over or it won't start when cold. This means the diesel fuel system contains both a low pressure and a high pressure side.
If it does not, there is problem in the power supply circuit and you will need to consult the factory wiring diagram. Then connect the ground lead to the chassis ground. This will only affect the polarity of the measured current. The pressure code was recorded because fuel system pressure wasn't what was expected of course, the pump wasn't running. I changed the plugs, took it to volvo and for 90. Performing a visual inspection and testing the car with a scan tool, and other special equipment listed above, will verify your issue before spending money and time replacing the fuel pressure regulator unnecessarily.
This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Consult the repair manual for your vehicle to determine which wire is which. The signals from the sensor need to be analyzed to determine where the problem exists. How do you troubleshoot code P0001? P0001 trouble code definition The P0001 code is associated with the electrical circuit which connects to your fuel pressure regulator. I've run plenty of injector cleaner and still happens. An advanced scan tool with specialty tools inspection is required.
Note: Circuit Open means that a component or sensor in a system is deprived of the reference voltage it needs to work. I have a 2004 C-max 2. I was thinking maybe glow plug relay as well but looks like only main dealer stocks it so probably expensive to change if not the solution hope someone can help as like you i am struggling to sort this one out in case it helps -took it to indy volvo specialist who found tcv wiring fault and crack in fuel filter housing fixed both and now running ok Big thank you to all who gave suggestions and help 54 plate 2d with dpf same sort of symptoms as you - also started suddenly as overtaking - and the codes i have are 0380 glow plug relay - dtc active -- permanent fault 0002 fuel vol control valve -dtc not active -- intermittent fault this was there before problem started 0092 fuel pressure control valve -signal too high -- intermittent fault I have lots of air bubbles in fuel line so maybe fuel codes due to lack of fuel to pump? Some fault codes will require additional time to diagnose. Connect the test light clamp to the battery negative post. .
A scan tool inspection is required. For example, Bosch provides the ability of one of the pumping elements to electrically switch off. Need help with a P0002 code? You may refer to factory service manual for specific troubleshooting steps. With this particular code, the solution may be something simple to replace or require extensive time to diagnose and repair. What repairs can fix the P0002 code? A solenoid attached to a pin on one inlet valve can hold the inlet check valve open resulting in no compression of fuel during pump operation. Depending on your vehicle, it may take several hours to determine the root cause and repair. I don't need to pump it while turning it over.
With the scan tool connected I typically evaluate the data while checking the fuel pressure and using a voltage meter to ensure all the values are adequate and match specifications. P0001 is properly diagnosed with a scan tool capable of sensor readings not just one from an auto parts store. It regulates the volume of fuel from the internal transfer pump to the high pressure pumping components. If the signals are fine, then we need to move towards the wiring, computer, or fuel system. There is a fuel pressure regulator built into the fuel pump module cap. Clear the fault codes to see which codes return. And an open circuit means that the sensor or the component is being deprived of the reference voltage it needs to work properly.
Link is a great article by. Then we will determine where the fault lies. For electrical signals, it must be evaluated thoroughly using a scan tool and a voltage meter. This is to ensure that your vehicle is really in need of a fuel pressure regulator replacement, or if there are other problems that causes the error code. YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle.