Fan Speed Sensor Circuit Range or Performance
Same as P0526 with the signal in plausible range yet not matching the commanded fan speed - typically sensor drift, weak magnet, or partial reluctor damage.
Affected components
- Fan speed sensor
Common causes
- High likelihood: Sensor signal drifted
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.