What does code P2CBB mean?

Q: What does code P2CBB mean?

Fan 3 Underspeed. P2CBB indicates that the powertrain control module (PCM) has detected the third cooling fan circuit operating below the expected speed threshold, based on feedback from the fan's speed sensor or a calculated current draw. The PCM commands the fan on and monitors its actual performance, and when the fan fails to reach the commanded speed within a calibrated time, it stores this code and may illuminate the check engine light.

DTC codes / P2Cxx · Hybrid propulsion / P2CBB

P2CBBFan 3 Underspeed

P2CBB indicates that the powertrain control module (PCM) has detected the third cooling fan circuit operating below the expected speed threshold, based on feedback from the fan's speed sensor or a calculated current draw. The PCM commands the fan on and monitors its actual performance, and when the fan fails to reach the commanded speed within a calibrated time, it stores this code and may illuminate the check engine light.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.