VOLVO
ECM-141A - EGR position 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)2004–2006Engine 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)2004–2006Engine 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 (ECM) monitors the EGR valve and reads the signal from its position sensor. The fault is set when the signal is faulty or unreasonable. The cause can be poor contact in the connections to the EGR valve or a damaged EGR valve.
Possible causes
- Play, contact resistance or oxidation in the connections
- Damaged EGR valve
What you can do
- 1Read the fault code, clear it and test drive to see whether it returns
- 2Check the connectors to the engine control module and the EGR valve for play, contact resistance and oxidation
- 3Check the EGR position sensor wire for a short to voltage
- 4If you have a diagnostic tool: check that the EGR position value in live data moves when the valve is activated, and stays still if it does not
- 5If the wiring is fault-free: have a workshop check the EGR valve
Symptoms you may notice1
- The check engine lamp lights or behaves abnormally
General guidance for car owners. Diagnosis on the car can point to a different cause.