What does code P2079 mean?

DTC codes / P20xx · Fuel and air metering and auxiliary emission controls / P2079

P2079Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Intermittent

P2079 indicates that the powertrain control module (PCM) has detected an intermittent fault in the circuit for the intake manifold tuning (IMT) valve position sensor or switch. The IMT valve adjusts intake runner length to optimize airflow at different engine speeds, and the sensor reports its actual position to the PCM. An intermittent signal means the PCM sees the circuit voltage jump or drop unpredictably, not a steady failure.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering and auxiliary emission controls

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.