VOLVO
ECM-2080 - Front temperature sensor, catalytic converter. 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)2005–2006Engine 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)2005–2006Engine 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 (ECM) compares the signal from the front catalytic converter temperature sensor with a calculated value. If the temperature rises too quickly after start-up, the code is set. The cause may be poor contact, an open circuit or short circuit in the wiring, or a damaged temperature sensor.
Possible causes
- Play, contact resistance or oxidation in the connections to the front sensor
- Open circuit or short circuit in the wiring to the sensor
- Damaged temperature sensor
What you can do
- 1Read and clear the fault code and check whether it returns
- 2Check the connector at the front catalytic converter temperature sensor for play, contact resistance and oxidation
- 3Check the wiring to the sensor for open circuit and short circuit
- 4Use a multimeter to check that the supply to the sensor has no open circuit or short circuit
- 5If you have a diagnostic tool, read the sensor temperature in live data during warm-up and see whether it rises steadily
- 6Have a workshop replace the temperature sensor if the fault remains
Symptoms you may notice1
- Warning symbol or text message in the display
General guidance for car owners. Diagnosis on the car can point to a different cause.