VOLVO
ECM-120E - Fuel pressure sensor. Faulty signal
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (10)
- Volvo C30 (2007–2013)2007Engine D4204T only
- Volvo C30 (2007–2013)2008–2010Engine D4204T only · Transmission MMT6, MPS6 only
- Volvo C70 (2006–2013)2008Engine D4204T only
- Volvo C70 (2006–2013)2009–2010Engine D4204T only · Transmission MMT6, MPS6 only
- Volvo S40 (2004–2013)2005–2006Engine D4204T, D4204T2 only
- Volvo S40 (2004–2013)2007Engine D4204T only
- Volvo S40 (2004–2013)2008–2010Engine D4204T only · Transmission MMT6, MPS6 only
- Volvo V50 (2004–2013)2005–2006Engine D4204T, D4204T2 only
- Volvo V50 (2004–2013)2007Engine D4204T only
- Volvo V50 (2004–2013)2008–2010Engine D4204T only · Transmission MMT6, MPS6 only
What does this fault code mean?
The engine control module requests a certain fuel pressure in the fuel rail through the fuel pump and the pressure control valve. If the pressure does not follow the requested value, the code is set. The fault may lie in the sensor, the control valve, the pump or a blocked fuel filter.
Possible causes
- Poor contact, contact resistance or oxidation at the pressure control valve connector
- Poor contact, contact resistance or oxidation at the fuel pressure sensor connector
- Clogged fuel filter
- Damaged fuel pressure sensor
- Damaged fuel pump
- Damaged fuel pressure control valve
What you can do
- 1The fuel system runs at very high pressure and can cause injury, so do not work on it yourself
- 2Check the connectors to the pressure control valve and the fuel pressure sensor for play, contact resistance and oxidation
- 3Check that the fuel filter is not clogged and that the injectors and the pressure control valve show no leaks
- 4Clear the code after a test drive; if it returns and nothing is found, a workshop can try a new fuel pressure sensor
- 5If the fault remains after these checks, have a workshop check the fuel pump and the pressure control valve
Symptoms you may notice2
- The engine lacks power
- A message and a warning symbol appear in the display
What the fault can affect1
- Engine speed is limited
General guidance for car owners. Diagnosis on the car can point to a different cause.