What does code P2CAB mean?

Q: What does code P2CAB mean?

DC/DC Converter Temperature Sensor F Circuit High. P2CAB indicates that the powertrain control module has detected an abnormally high voltage on the signal circuit of the temperature sensor that monitors the DC/DC converter, which is the component that steps high-voltage battery power down to charge the 12-volt system. The high signal voltage tells the module that the sensor circuit is open, shorted to voltage, or that the sensor's internal resistance has risen beyond the expected range.

DTC codes / P2Cxx · Hybrid propulsion / P2CAB

P2CABDC/DC Converter Temperature Sensor F Circuit High

P2CAB indicates that the powertrain control module has detected an abnormally high voltage on the signal circuit of the temperature sensor that monitors the DC/DC converter, which is the component that steps high-voltage battery power down to charge the 12-volt system. The high signal voltage tells the module that the sensor circuit is open, shorted to voltage, or that the sensor's internal resistance has risen beyond the expected range.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

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.