VOLVO
ECM-02E2 - Diesel Intake Air Flow Control Circuit Low
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?
On the diesel engine, the engine control module checks the voltage signal from the control valve in the air intake inlet and logs a fault when the signal is too low. The cause may be poor contact, a break or a short to ground in the signal wire, or a damaged control valve.
Possible causes
- Contact resistance or oxidation in the connections
- Open circuit in the signal wire
- Signal wire shorted to ground
- Damaged control valve at the air intake inlet
What you can do
- 1Check that the relevant fuses are intact
- 2Check the connector at the intake air control valve: is it fully engaged and free from oxidation?
- 3Follow the signal wire to the control valve and look for breaks, chafing and pinched sections
- 4With the connector unplugged, use a multimeter to check that the signal wire has no connection to ground (the body)
- 5If you have a diagnostic tool, read the control valve signal in live data with the engine running and see whether the value follows when the valve is activated
- 6If the fault remains, have a workshop decide whether the control valve should be replaced
Symptoms you may notice1
- No noticeable symptoms for the driver
General guidance for car owners. Diagnosis on the car can point to a different cause.