VOLVO
IGM-B200615 - Electric Machine Temperature Sensor. General Electrical Failures. Circuit short to battery or open
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) measures the temperature in the starter generator ISG using a temperature sensor. The code concerns the signal from the sensor being too high, and one listed cause is a short to supply voltage on the wire. The fault is only checked once the test has started at ignition on.
Possible causes
- Loose connections, contact resistance or oxidation in the terminals between the ISG and the voltage conversion unit ISC
- The signal cable is short-circuited to supply voltage
- The wiring between ISG and ISC is damaged
- The temperature sensor on the ISG is damaged
- Internal fault inside the ISC voltage converter
What you can do
- 1Read out, clear the code, start the car and see whether it returns
- 2Have a workshop measure on the temperature sensor signal cable against the ISC to see whether it is short-circuited to supply voltage
- 3Do not work on the wiring in the high voltage system yourself; have a workshop carry out those checks
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 affect2
- The starter generator ISG has reduced function
- Charging of the high voltage battery is reduced
General guidance for car owners. Diagnosis on the car can point to a different cause.