OBD-II code · Powertrain (generic)
P0067 Air Assisted Injector Control Circuit High
Control voltage of the air-assist injector valve is above the expected range — short to power or open ground. A flow-deviating injector throws off cylinder balance — adjacent cylinders run leaner/richer to compensate, often masking the root cause until the trim limit is hit.
Is it safe to drive with P0067?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyWiring shorted to battery
- Less likelyConnector pins corroded - high contact resistance
- Less likelySupply wire pinched against B+ source
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–3 h
- Emissions test
- Likely to fail
- Parts involved
- Air Assist Valve, Actuator Wiring
Related codes
- P0064HO2S Heater Control Circuit High Bank 2 Sensor 3
- P0065Air Assisted Injector Control Range/Performance
- P0066Air Assisted Injector Control Circuit Low
- P0068MAP/MAF - Throttle Position Correlation
- P0069Manifold Absolute Pressure - Barometric Pressure Correlation
- P006AMAP - Mass or Volume Air Flow Correlation Bank 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.