P1136moderate severityPowertrain
Cooling Fan for Control Modules Signal Fault
on 2008 Volvo S80 2.9L I6 · AWD
What this code means
The ECM detected a fault in the signal circuit for the cooling fan that serves the control modules. Volvo uses a dedicated fan to cool electronic modules in the engine bay.
Symptoms
- Check Engine Light
- Control modules may overheat
- Possible reduced performance in hot weather
- Other fault codes from overheated modules
Common causes
- Faulty cooling fan motor
- Fan relay failure
- Wiring fault to cooling fan
- Fan control module fault
- Blown fan fuse
Diagnostic steps
- Check fan operation by applying direct power
- Test fan relay
- Check fan fuse
- Inspect wiring to fan
- Monitor fan control signal from ECM
Repair notes
Replace the cooling fan or repair the fan circuit wiring.
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