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DTC codes / P2Axx · Hybrid propulsion / P2AB6

P2AB6Cold Start Intake Manifold Runner Control Stuck Closed Bank 2

P2AB6 indicates that the powertrain control module (PCM) has detected a fault in the cold start intake manifold runner control (IMRC) system for bank 2, specifically that the runner control valve is stuck in the closed position. The PCM commands the IMRC to open during cold starts to improve combustion stability and reduce emissions, but the feedback signal or expected performance does not match the commanded state, so the PCM 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.

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