VOLVO
ECM-P054516 - Exhaust Gas Temperature Sensor Circuit Low - Bank 1 Sensor 1. General Electrical Failures. Circuit voltage below threshold
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Show models by year and engine (6)
- Volvo S80 (2007–)2007–2009Engine D5244T4, D5244T5 only
- Volvo V70 (2008–)2008–2009Engine D5244T4, D5244T5 only
- Volvo XC60 (2009–)2009All engines except: B6304T2
- Volvo XC70 (2008–)2008All engines except: B6324S
- Volvo XC70 (2008–)2009Engine D5244T4, D5244T5 only
- Volvo XC90 (2003–)2013–2014Engine D5244T18, D5244T5 only
What does this fault code mean?
The ECM compares the reading from the sensor on the catalytic converter with a calculated value. The code is set when the signal is faulty, which is an electrical fault where the voltage in the circuit is too low. The cause may be a shorted signal wire, a break, poor contact or a damaged sensor.
Possible causes
- Signal wire shorted to supply voltage
- Damaged temperature sensor
- Contact resistance or oxidation in connections
- Break in the signal wire
- Signal wire shorted to ground
What you can do
- 1Check that the fuses are intact
- 2Check the connector to the temperature sensor on the catalytic converter for oxidation and loose contacts
- 3Use a multimeter to check that the signal wire has no break and is not shorted to ground
- 4Use a multimeter to check that the signal wire is not shorted to supply voltage when the ignition is off
- 5Clear the code and start the engine to see whether it returns
- 6If the fault returns, have a workshop with diagnostic equipment check the sensor and the signal wire
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.