OBD-II code · Powertrain (generic, extended)
P22D8 Turbocharger Turbine Inlet Valve Position Sensor Circuit Intermittent/Erratic
Position sensor signal jumps or drops out intermittently. Boost control tracks commanded vs. actual manifold pressure; persistent deviation means wastegate, vanes, hose or actuator are not delivering the requested pressure.
Is it safe to drive with P22D8?
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
Symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2.5 h
- Emissions test
- Likely to fail
- Parts involved
- Turbine Inlet Valve
Related codes
- P22D4Turbocharger Turbine Inlet Valve Position Sensor Circuit
- P22D5Turbocharger Turbine Inlet Valve Position Sensor Circuit Range/Performance
- P22D6Turbocharger Turbine Inlet Valve Position Sensor Circuit Low
- P22D7Turbocharger Turbine Inlet Valve Position Sensor Circuit High
- P22D9Cylinder 1 Alternative Fuel Injector Control Circuit/Open
- P22DACylinder 1 Alternative Fuel Injector Control Circuit Low
- P22DBCylinder 1 Alternative Fuel Injector Control Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.