Code result
P2C42
Fan 4 Performance/Stuck Off
High severity
What it means
Cooling fan 4 is commanded on but does not produce the expected airflow. Mechanical seizure, broken motor, or relay failure.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Fan motor seized or burned out
highOne of the most commonly reported causes for this code — check this first.
Fan relay contacts oxidised
mediumA plausible cause — test and verify before replacing parts.
Carbon or debris buildup preventing free movement
lowLess common, but worth ruling out after the more likely causes.
Related help
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