VOLVO
IGM-P117122 - Rotor Sensor. General Signal Failures. Signal too high
System
Unknown System / Manufacturer Specific
Volvo models this fault code applies to
Applies to the following models:
1 modelV60 (2011–)
Show models by year and engine (2)
What does this fault code mean?
The high voltage generator control module (IGM) monitors the internal components of the starter generator ISG and checks the calibrated limits using the ISG's position sensor. The code is stored when the voltage to the position sensor is outside the permitted tolerance range. The fault is only checked once the combustion engine is running.
Possible causes
- Oxidation, contact resistance or loose contacts at the connections between the ISG and the ISC
- Open circuit in the signal cable
- Wiring between the ISG and the ISC is damaged
- Internal fault inside the ISG starter generator
- Internal fault inside the ISC voltage converter
What you can do
- 1Read out and note the code, clear it and road test with the engine running
- 2Have a workshop check the signal cable and the connectors between the ISG and the ISC
- 3Have a workshop check the starter generator ISG and the ISC voltage converter
- 4The high voltage system may only be handled by a workshop; do not work on it yourself
Symptoms you may notice5
- Warning symbol and text message in the display
- Warning about power supply problems from the alternator and charge regulator
- Charging of the high voltage battery while driving is absent, reduced or not working correctly
- High voltage battery is discharged or charges poorly
- HYBRID drive mode: the combustion engine is active all the time or too often
What the fault can affect1
- The high voltage battery cannot be charged by the combustion engine
General guidance for car owners. Diagnosis on the car can point to a different cause.