What does code P2D31 mean?

Q: What does code P2D31 mean?

Intake Manifold Tuning Valve Exceeded Learning Limit Bank 1. The powertrain control module (PCM) has detected that the intake manifold tuning valve on bank 1 cannot reach its commanded position within the learned adaptation limits, meaning the valve's actual airflow effect has drifted too far from what the software expects. This typically points to a mechanical binding, carbon buildup, or a faulty actuator rather than an electrical circuit failure.

DTC codes / P2Dxx · Hybrid propulsion / P2D31

P2D31Intake Manifold Tuning Valve Exceeded Learning Limit Bank 1

The powertrain control module (PCM) has detected that the intake manifold tuning valve on bank 1 cannot reach its commanded position within the learned adaptation limits, meaning the valve's actual airflow effect has drifted too far from what the software expects. This typically points to a mechanical binding, carbon buildup, or a faulty actuator rather than an electrical circuit failure.

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.