OBD-II code · Powertrain (generic)
P012E Turbocharger/Supercharger Inlet Pressure Sensor A Circuit Intermittent/Erratic
Intermittent signal from turbo inlet pressure sensor A. 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 P012E?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyConnector loose or corroded
- 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
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Turbo Inlet Pressure Sensor A, Sensor Wiring
Related codes
- P012BTurbocharger/Supercharger Inlet Pressure Sensor A Circuit Range/Performance
- P012CTurbocharger/Supercharger Inlet Pressure Sensor A Circuit Low
- P012DTurbocharger/Supercharger Inlet Pressure Sensor A Circuit High
- P012FEngine Coolant Temperature / Engine Oil Temperature Correlation
- P0130O2 Sensor Circuit Malfunction (Bank 1, Sensor 1)
- P0131O2 Sensor Circuit Low Voltage (Bank 1, Sensor 1)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.