VOLVO
ECM-1667 - Fuel injection system driver. 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 ECM supplies the injectors through its integrated high output driver. If the signal from that driver is faulty, fault code ECM-1667 is set. The fault may lie in the connectors, the wiring, the injectors or the fuel return line.
Possible causes
- Loose connections, contact resistance or oxidation at the injector terminals
- Short circuit in the wiring to the injectors
- A clogged fuel return hose at the injectors
- Damaged injector
What you can do
- 1Switch off the ignition and check all injector connectors for play, contact resistance and oxidation
- 2With a multimeter, check all the injector wiring for breaks and for short circuits to ground or voltage
- 3If nothing else is found, the fuel return line to the injectors may be blocked. Have a workshop check it
- 4If the fault remains, have a workshop check the injectors
Symptoms you may notice1
- Warning symbol and a text message in the display
General guidance for car owners. Diagnosis on the car can point to a different cause.