VOLVO
ECM-P2A0023 - O2 Circuit Range / Performance (Bank 1, Sensor 1). General Signal Failures. Signal stuck low
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
5 modellerS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Vis modeller per årsmodell og motor (6)
- Volvo S80 (2007–)2007–2009Kun motor: D5244T4, D5244T5
- Volvo V70 (2008–)2008–2009Kun motor: D5244T4, D5244T5
- Volvo XC60 (2009–)2009Alle motorer unntatt: B6304T2
- Volvo XC70 (2008–)2008Alle motorer unntatt: B6324S
- Volvo XC70 (2008–)2009Kun motor: D5244T4, D5244T5
- Volvo XC90 (2003–)2013–2014Kun motor: D5244T18, D5244T5
Hva betyr feilkoden?
The code means that the oxygen sensor signal stays constantly low. The engine control module (ECM) calculates the sensor temperature from its internal resistance, and the code is set when the calculated value is incorrect. It is tested with the engine running.
Mulige årsaker
- Short circuit between the signal wires
- Internal fault in the ECM
Hva du kan gjøre
- 1Read the code with a diagnostic tool and check whether it is active or only stored
- 2Check the connectors at the oxygen sensor for contact resistance, looseness and oxidation
- 3Use a multimeter to check that the signal wires are not shorted to each other
- 4Look for chafed wiring at the oxygen sensor where the signal wires may have touched each other
- 5Have a workshop check the oxygen sensor and the engine control module, since an internal fault in the module is a possible cause
Symptomer du kan merke1
- No noticeable symptoms for the driver
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