VOLVO
ECM-02E3 - Diesel Intake Air Flow Control Circuit High
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 signal wire to the control valve in the air intake inlet. If the voltage on the wire becomes too high, a fault is logged. The usual cause is the wire having come into contact with supply voltage, or a damaged control valve.
Possible causes
- Signal wire shorted to supply voltage
- Damaged control valve at the air intake inlet
What you can do
- 1Check that the fuses for the control valve are intact
- 2With the ignition on and the control valve connector unplugged, use a multimeter to see whether the signal wire picks up voltage
- 3Follow the signal wire to the control valve and look for chafing and places where it may have touched a live wire
- 4If you have a diagnostic tool, read the control valve signal in live data with the ignition on and see whether it stays constantly high
- 5If 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.