VOLVO
ECM-0012 - A/C linear pressure sensor. Power supply too low. Intermittent fault.
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
4 ModelleS70 (1997–2000), S80 (1999–2006), V70 (1997–2000), V70 (2000–2008)
Was bedeutet der Fehlercode?
The engine control module receives too low a supply voltage to the A/C pressure sensor. The fault is intermittent, meaning it comes and goes, and may not be present right now. The sensor measures the pressure in the climate system, and while the fault is active the system may give no cooling.
Mögliche Ursachen
- The supply wire is shorted to earth
- Break in the signal or supply wire
- Contact resistance in the connections
- Faulty A/C pressure sensor
- Refrigerant is missing or too low in the A/C system
Was Sie tun können
- 1Check the wires and connector to the A/C pressure sensor for contact resistance, chafing and corrosion
- 2Measure with a multimeter that the supply wire to the sensor is not shorted to earth and has no break
- 3Switch on the A/C and see whether it cools. If it does not cool at all, note that and at what engine speed
- 4Refrigerant may only be handled by a workshop with the right equipment, so topping up or checking the amount is left to them
- 5Clear the fault code and road test the car. If it returns, have a workshop investigate the A/C pressure sensor and the A/C system
Symptome, die Sie bemerken können1
- No cooling from the climate system
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.