VOLVO
ECM-P251919 - A/C Request A Circuit. General Electrical Failures. Over temperature
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?
Although the code is named over temperature, it concerns a fault on the output of the internal power stage in the engine control module, which drives the A/C compressor solenoid with a PWM signal. The code can be checked when A/C is activated.
Mulige årsaker
- Signal line from the engine control module short-circuited to supply voltage (see ECM-P252112)
- Damaged solenoid in the A/C compressor
- Signal line from the engine control module short-circuited to ground (see ECM-P252011)
- Contact resistance or oxidation in the connectors, or open circuit in the signal line (see ECM-P251913)
- Internal fault in the engine control module
Hva du kan gjøre
- 1Read the fault status while A/C is on and the engine is running. If the fault is not visible, it may have been intermittent
- 2Check that the relevant fuses are intact
- 3If you have a diagnostic tool, activate the A/C compressor and see whether it responds to the control
- 4Use a multimeter to check that the signal line from the engine control module to the A/C compressor is not short-circuited to supply voltage or ground
- 5If the fault returns, have a workshop assess whether the engine control module needs replacing, since an internal fault cannot be remedied by the owner
Symptomer du kan merke1
- No cooling effect from the A/C system
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.