P0495low severityPowertrain
Cooling Fan Speed High
on 2005-2011 Audi A6 4.2L V8 · AWD
What this code means
The PCM has detected that the cooling fan speed is higher than expected. Excessive fan speed may indicate a control fault or sensor issue.
Symptoms
- Fan running constantly at high speed
- Excessive fan noise
- Warning lamp on
Common causes
- Faulty fan control module
- Faulty coolant temperature sensor
- Damaged wiring or connector
- Faulty PCM
Diagnostic steps
- Scan for stored codes
- Monitor fan speed and coolant temp data
- Inspect fan control wiring
- Test fan module and sensors
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