OBD-II code · Powertrain (generic, extended)
P2079 Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Intermittent (Bank 1)
IMT position sensor at bank 1 signal is unstable — connector or harness issue. The intake manifold runner control (IMRC) flaps tune intake geometry for filling efficiency across the rpm range; stuck flaps cost part-load torque and can set lean codes.
Is it safe to drive with P2079?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyIntermittent connector
- Less likelyConnector with intermittent contact under vibration
- Less likelyHarness routed against vibrating component
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- Parts involved
- Imt Position Sensor
Related codes
- P2075Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit (Bank 1)
- P207EIntake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Intermittent (Bank 2)
- P2076Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Range/Performance (Bank 1)
- P2077Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Low (Bank 1)
- P2078Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit High (Bank 1)
- P207AIntake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit (Bank 2)
- P207BIntake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Range/Performance (Bank 2)
- P207CIntake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Low (Bank 2)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.