VOLVO
ECM-P252000 - A/C Request A Circuit Low. General Failure Information. No sub type information
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
3 ModelleS60 (2011–), S80 (2007–), V70 (2008–)
Modelle nach Baujahr und Motor anzeigen (9)
- Volvo S60 (2011–)2011–2012Nur Motor: B5254T5
- Volvo S80 (2007–)2007–2008Nur Motor: B5254T6
- Volvo S80 (2007–)2009Nur Motor: B5254T6, B5254T8
- Volvo S80 (2007–)2010–2011Nur Motor: B5254T10, B5254T11, B5254T8
- Volvo S80 (2007–)2012Nur Motor: B5254T10
- Volvo V70 (2008–)2008Nur Motor: B5254T6
- Volvo V70 (2008–)2009Nur Motor: B5254T6, B5254T8
- Volvo V70 (2008–)2010–2011Nur Motor: B5254T10, B5254T11
- Volvo V70 (2008–)2012Nur Motor: B5254T10
Was bedeutet der Fehlercode?
The code concerns the control valve in the A/C compressor, which the engine control module drives with PWM. The control module compares the valve signal with predefined limits and stores the code when the signal is outside them. Possible causes are a short in the signal wire, an open circuit in the supply wire or a damaged valve.
Mögliche Ursachen
- Signal wire short-circuited to supply voltage
- Signal wire short-circuited to ground
- Open circuit in the voltage supply cable
- Damaged control valve (solenoid)
Was Sie tun können
- 1If you have a diagnostic tool, read the fault status with A/C switched on and see whether the fault is still active
- 2Check that the relevant fuses are intact
- 3Check the connector to the control valve in the A/C compressor for contact resistance and oxidation
- 4Use a multimeter to check that the supply cable to the control valve has no open circuit and is not short-circuited to ground (body)
- 5If the fault remains, have a workshop with diagnostic equipment check the control valve in the A/C compressor
Symptome, die Sie bemerken können1
- Uneven cooling from the A/C system
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.