Fuel Rail/System Pressure Too Low
Table of contents
P0087 VOLKSWAGEN Possible Causes
- Faulty fuel pressure sensor
- Faulty fuel pump
- Fuel pressure sensor harness is open or shorted
- Fuel pressure sensor electrical circuit poor connection
- Blocked fuel filter
- Fuel line restricted
- Faulty fuel pressure regulator
How do I fix code P0087 VOLKSWAGEN?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- There is a service bulletin for the following Volkswagen vehicles:
- 2006-2007 Volkswagen Eos
- 2006-2007 Volkswagen GTI
- 2006-2007 Volkswagen Jetta
- 2006-2007 Volkswagen Passat
- 2006-2007 Volkswagen Passat Wagon
- Volkswagen Factory Service Bulletin OBDII Code P0087
Cost of diagnosing the P0087 VOLKSWAGEN code
The cost of diagnosing the P0087 VOLKSWAGEN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0087 VOLKSWAGEN Description
This fault code is stored in the Engine Control Module (ECM) when the fuel pressure is not as expected. Normally manufacturers will support data parameters for actual and desired fuel pressure. When there is a conflict the Engine Control Module stores a fault code.
A number of issues may cause this fault code to be set such as a faulty fuel rail pressure sensor, a mechanical fault with the inlet metering valve or rail pressure control solenoid could cause the valve to become stuck. An electrical fault such as an open circuit in the inlet metering valve or fuel pressure control solenoid on a system with a normally closed valve will also cause this situation. A short circuit on the control wire of a normally open inlet metering valve will also cause this fault.
A fault in the fuel injector return system causes the fuel pressure to be lower than expected. This causes fuel from the high-pressure circuit to be leaked back to the low-pressure circuit. A faulty maximum pressure relief valve will also cause this situation.
The high-pressure pump should also be tested to ensure it is capable of delivering the required volume of fuel.