What does code P2AB5 mean?

DTC codes / P2Axx · Hybrid propulsion / P2AB5

P2AB5Cold Start Intake Manifold Runner Control Stuck Closed Bank 1

P2AB5 indicates that the engine computer has detected a fault in the cold start intake manifold runner control (IMRC) system for bank 1, specifically that the runner control valve is stuck in the closed position. The computer commands the valve to move during cold starts to optimize airflow, but the expected change in manifold pressure or airflow does not occur, so it sets this code.

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.