VOLVO
ECM-0182 - Fuel temperature sensor. Signal too 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 (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 engine control module has detected that the signal from the fuel temperature sensor is too low and treats this as a fault. The fault is checked only while the engine runs, so the lamp may take a while to go out after a repair. The sensor measures fuel temperature, and a wrong signal gives the control module incorrect data. Causes are poor contact, an open circuit or short to ground in the signal wire, or a damaged sensor.
Possible causes
- Contact resistance in the connectors
- Open circuit in the signal wire
- Signal wire shorted to ground
- Damaged fuel temperature sensor
What you can do
- 1Read and note the code, clear it and road test to see whether it returns
- 2Check that the connectors at the fuel temperature sensor and at the control module are fully engaged and free from oxidation
- 3Follow the signal wire from the sensor and look for chafing, pinched sections and loose clips
- 4With the connector unplugged, use a multimeter to check that the signal wire has no connection to ground (the body)
- 5With a diagnostic tool, read the fuel temperature live with the engine running. An unrealistically low reading points to the sensor or wiring
- 6If the fault returns, have a workshop with diagnostic equipment decide whether the sensor needs replacing
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.