P0527moderate severityPowertrain
Fan Speed Sensor Circuit Range/Performance
on 2007 Mercedes-Benz S65 AMG 6.0L V12 BiTurbo M275 · RWD
What this code means
The cooling fan speed sensor signal is out of the normal expected range. The reported fan speed doesn't match commanded operation.
Symptoms
- Engine runs hot
- Fan behaves erratically
- Check engine light on
Common causes
- Faulty fan speed sensor
- Wiring or connector faults
- Worn fan motor bearings
- Faulty control module
Diagnostic steps
- Retrieve trouble codes
- Inspect sensor and wiring
- Compare commanded vs actual fan speed
- Test fan motor performance
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P0001
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P0002
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P0003
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P0004
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P0005
Fuel Shutoff Valve A Control Circuit/Open
P0006
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P0007
Fuel Shutoff Valve A Control Circuit High
P0008
Engine Position System Performance - Bank 1
P0009
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P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1