P2B31
Fan 2 Performance/Stuck Off
P2B31 is an OBD-II diagnostic trouble code meaning: Fan 2 Performance/Stuck Off. Common causes: fan motor malfunction, damage to wiring or connectors. Estimated repair cost: $17–56.
Symptoms
- Engine overheating
- The fan does not turn on at high temperatures
- Increased fuel consumption
- Reduced engine power
- Check Engine light comes on
Causes
- Fan motor malfunction
- Damage to wiring or connectors
- Faulty fan relay
- Problems with the engine control unit
- Mechanical fan lock
How to Fix
- Check fan operation manually
- Inspect wiring and connectors for damage
- Check fan relay
- Replace the faulty fan if necessary
- Check and update ECU firmware if necessary
Related codes
Error P2B31 by Vehicle Brand
FAQ
What does the P2B31 code mean?
P2B31 is an OBD-II diagnostic trouble code that indicates: Fan 2 Performance/Stuck Off
What causes a P2B31 error code?
The most common causes of P2B31 include: Fan motor malfunction; Damage to wiring or connectors; Faulty fan relay; Problems with the engine control unit.
How do I fix a P2B31 diagnostic trouble code?
To fix P2B31: Check fan operation manually. Inspect wiring and connectors for damage. Check fan relay. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2B31?
Limited driving only, diagnose soon
How much does it cost to fix P2B31?
The estimated repair cost for P2B31 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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