Powertrain Definition only Lights the check engine lamp

P2CBC: Fan 3 Overspeed

Standardized SAE J2012 code · P2Cxx codes

What does P2CBC mean?

Cooling fan 3 exceeds the calibrated maximum speed. Indicates load lost (broken fan blade) or supply voltage above nominal.

The code tells you which monitor failed, not which part is broken. Test before replacing parts.

Common causes

  • High Fan blade broken or detached
  • Medium Alternator overvoltage

Likelihood is a general estimate across vehicles; your make and model may differ.

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