VOLVO
ECM-02E9 - Diesel Intake Air Flow Position Sensor 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 registers that the signal from the position sensor for the air intake control valve is too high. The causes are a wire that has come into contact with supply voltage, or a damaged control valve.
Possible causes
- Wire shorted to supply voltage
- Damaged control valve at the air intake inlet
What you can do
- 1Start by checking that the fuses for the control valve are intact
- 2With the ignition on and the connector unplugged, use a multimeter to see whether the wire to the control valve carries voltage
- 3Follow the wire to the control valve and look for chafing and pinched sections where it may have contacted a live wire
- 4If you have a diagnostic tool, read the position sensor value in live data with the engine running 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.