Code result
P2B31
Fan 2 Performance/Stuck Off
High severity
What it means
Cooling fan 2 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
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose P2B31 freeNo credit card required