VOLVO
IEM-P117148 - Rotor Sensor. System Internal Failures. Supervision software failure
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?
Although the code is named surveillance software failure, it applies when the signal from the angle sensor in the electric rear axle (ERAD) falls outside the permitted tolerance range. The causes are lost calibration, a wiring fault between the ERAD and the voltage converter (ISC), or an internal fault in the ISC. Electric propulsion is then not possible.
Possible causes
- Lost calibration
- Loose contacts, contact resistance or oxidation at the connections between the ERAD and the ISC, or damaged wiring between them
- Signal cable short-circuited to ground
- Signal cable short-circuited to supply voltage or has an open circuit
- Internal fault in the voltage converter (ISC)
What you can do
- 1Have a workshop recalibrate the angle sensor and check that the calibration passes. High voltage systems may only be handled by qualified personnel
- 2Have a workshop check the wiring between the electric rear axle and the ISC. Do not work on the wiring yourself
- 3If you have a diagnostic tool: read the angle sensor value in live data in drive mode and see whether it is steady
- 4After the repair, check that the code is not stored again
Symptoms you may notice4
- Warning window with a warning symbol and text message
- Drive mode PURE disengages automatically or is unavailable
- Drive mode AWD disengages automatically or is unavailable
- Drive mode HYBRID: the combustion engine runs all the time or too often
What the fault can affect2
- Electric propulsion is not possible
- Brake energy regeneration from the electric rear axle is not possible
General guidance for car owners. Diagnosis on the car can point to a different cause.