VOLVO
ECM-02EA - Diesel Intake Air Flow Position Sensor Circuit Intermittent/Erratic
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 (5)
- 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)2008–2010Engine D4204T only · Transmission MMT6, MPS6 only
- Volvo V50 (2004–2013)2008–2010Engine D4204T only · Transmission MMT6, MPS6 only
What does this fault code mean?
Although the code is named position sensor for intake air flow, it concerns the signal from the EGR valve position sensor. The engine control module monitors the EGR valve's function and logs a fault when the signal is incorrect or unreasonable. The fault is intermittent, so the signal comes and goes. The causes are loose or poorly contacting connections, or a damaged EGR valve.
Possible causes
- Loose connection
- Contact resistance or oxidation in the connections
- Damaged EGR valve
What you can do
- 1Read the fault code, clear it and road test. If it does not return straight away, the fault may be intermittent
- 2Check that the connectors to the EGR valve position sensor are fully engaged and free from oxidation
- 3Follow the cable from the EGR valve and look for chafing, pinched sections and loose clips, especially where it moves
- 4If you have a diagnostic tool, read the EGR valve position value in live data with the engine running and see whether it jumps erratically
- 5If the fault returns, have a workshop with diagnostic equipment check the EGR valve and decide whether it should be replaced
Symptoms you may notice2
- Check engine light comes on or behaves abnormally
- Text message and warning symbol in the display
General guidance for car owners. Diagnosis on the car can point to a different cause.