Code Definition

P0067 — Air Assisted Injector Control Circuit High

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0067

P0067 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0067 is stored, the module has detected a signal or supply voltage higher than the expected operating range.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0067 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P0067 code indicates a high voltage condition in the air assisted injector control circuit. Air assisted injectors are used to enhance the fuel-air mixture in the engine, particularly under specific operating conditions such as during cold starts. The Engine Control Module (ECM) sets this code when it detects that the voltage in the control circuit for the air assisted injector system is higher than expected. This high voltage situation could affect the system's operation, potentially impacting engine performance, fuel efficiency, and emissions.

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