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DTC codes / P2Axx · Hybrid propulsion / P2ACB

P2ACBCharge Air Cooler Coolant Temperature Sensor B Circuit Intermittent/Erratic

P2ACB means the engine computer has detected an intermittent or erratic signal from the charge air cooler coolant temperature sensor B circuit. The sensor monitors the coolant temperature inside the charge air cooler, and the computer sees the voltage signal jumping or dropping out instead of changing smoothly with temperature.

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.

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