VOLVO
ECM-P062B21 - Internal Control Module Fuel Injector Control Performance. General Signal Failures. Signal too low
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 engine control module monitors the temperature of the exhaust gases and compares it with a calculated value. The code is set when the reading moves too far from the calculated figure, and in this case the signal is too low. This can be due to a damaged temperature sensor or poor contact at the sensor.
Possible causes
- Damaged temperature sensor
- Contact resistance or oxidation in the connectors
- The same signal fault as fault code ECM-P062B22 refers to, that is, the signal too high
What you can do
- 1Check that the fuses are intact
- 2With the ignition off, check the connector at the temperature sensor for contact resistance and oxidation
- 3If you have a diagnostic tool: read the exhaust temperature in live data when the engine is cold and again when it has warmed up, and see whether it changes smoothly
- 4If the fault remains: have a workshop check the temperature sensor and its wiring
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.