VOLVO
ECM-0184 - Fuel temperature sensor. Signal missing
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 monitors the fuel temperature sensor signal and logs a fault when the signal is uneven or missing. The fault is checked only while the engine runs, so the lamp may take a while to go out after a repair. The cause is either poor contact in connectors or wiring, or a damaged sensor.
Possible causes
- Loose connection, contact resistance or oxidation in connectors or wiring
- 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 looseness, chafing and loose clips
- 4With the sensor connector unplugged, use a multimeter to check that the signal wire has no connection to ground (the body)
- 5If you have a diagnostic tool, check that fuel temperature in live data is smooth and steady with the engine running. An uneven value points to the connector 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.