VOLVO
ECM-P008835 - Fuel Rail/System Pressure - Too High. FM (Frequency Modulated) / PWM (Pulse Width Modulated) Failures. Signal high time above maximum
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
9 modelsC30 (2007–2013), S40 (2004–2013), S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V50 (2004–2013), V60 (2011–), V70 (2008–)
Show models by year and engine (9)
- Volvo C30 (2007–2013)2011–2013Engine D4162T only
- Volvo S40 (2004–2013)2011–2012Engine D4162T only
- Volvo S60 (2011–)2011–2015Engine D4162T only
- Volvo S80 (2007–)2012–2015Engine D4162T only
- Volvo V40 (2013–)2013–2015Engine D4162T only
- Volvo V40 Cross Country (2013–)2013–2015Engine D4162T only
- Volvo V50 (2004–2013)2011–2012Engine D4162T only
- Volvo V60 (2011–)2011–2015Engine D4162T only
- Volvo V70 (2008–)2012–2015Engine D4162T only
What does this fault code mean?
The engine control module (ECM) takes its rail pressure reading from the sensor and checks that it stays within limits. The fault code is set when the fuel pressure is too high. It can be caused by a damaged fuel pressure sensor or a damaged fuel pressure control valve.
Possible causes
- Damaged fuel pressure sensor
- Damaged fuel pressure control valve
What you can do
- 1Check the connector at the fuel pressure sensor for contact resistance and oxidation
- 2Look for damage on the sensor cable and check that it is not pinched
- 3If you have a diagnostic tool: read the fuel pressure in live data with the engine running and compare it with the pressure the control module requests
- 4Have a workshop check the fuel pressure sensor with a gauge, and the fuel pressure control valve
- 5After the repair, read off the fault code and check that it does not come back
Symptoms you may notice2
- A warning symbol and a text message appear in the display
- The car lacks power while driving
What the fault can affect1
- Engine torque may be limited
General guidance for car owners. Diagnosis on the car can point to a different cause.