VOLVO
ECM-P042600 - Catalyst Temperature Sensor Range/Performance (Bank1). General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
2 modelsS80 (2007–), V70 (2008–)
Show models by year and engine (2)
What does this fault code mean?
The ECM continuously compares the signal from the temperature sensor on the front catalytic converter with a calculated value. The fault is set when the signal is wrong, and
Possible causes
- Loose connection
- Contact resistance or oxidation in the connections
- Open circuit or short to ground in the signal cable
- Open circuit in the ground lead
- Damaged temperature sensor at the catalytic converter
What you can do
- 1Check that the connectors to the temperature sensor at the catalytic converter are firmly seated and not oxidised
- 2Use a multimeter to check that the signal cable has no break and is not short-circuited to ground (the body)
- 3Check that the ground wire to the sensor is intact
- 4If you have a diagnostic tool, read the sensor value with the ignition on and see whether it seems reasonable
- 5Read and clear the fault code, then switch the ignition on again to see whether it returns
- 6If the fault remains, have a workshop check the temperature sensor at the catalytic converter
Symptoms you may notice1
- The Check engine (malfunction indicator) light comes on or behaves abnormally
General guidance for car owners. Diagnosis on the car can point to a different cause.