What does code P2AC8 mean?

DTC codes / P2Axx · Hybrid propulsion / P2AC8

P2AC8Charge Air Cooler Coolant Temperature Sensor B Range/Performance

P2AC8 indicates that the powertrain control module has detected an out-of-range or erratic signal from the charge air cooler coolant temperature sensor B, which monitors the coolant temperature in the charge air cooling circuit. The computer compares this signal against expected values and sets the code when the voltage or resistance falls outside the normal operating window for a calibrated period.

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.