Air Assisted Injector Control Circuit Or Circuit Low
Table of contents
P0066 SUBARU Possible Causes
- Blocked or Clogged Inlet and Outlet Passages/Hoses
- Faulty Air Assisted Injector Control Solenoid Valve
- Air Assisted Injector Control Solenoid Valve harness is open or shorted
- Air Assisted Injector Control Solenoid Valve circuit poor electrical connection
How do I fix code P0066 SUBARU?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- The fault could cause the engine to idle rough and possibly stall. The Air Assist Injector Solenoid Valve is supplied power from the main relay and controlled by the Engine Control Module. The Air Assist Injector Solenoid Valve can be tested by manually applying voltage and ground in order to actuate it. Once the valve is open, the air passages within the valve and system can be checked for obstructions. The Air Assist Injector Solenoid Valve can also be actuated by connecting the green test mode connector located under the instrument panel (On driver’ s side, the connector is normally unplugged). Once connected, the Air Assist Injector Solenoid Valve will be turned on and off with the key placed in the on, engine off position. It will continue to turn on and off until the green test mode connector is disconnected.
Cost of diagnosing the P0066 SUBARU code
The cost of diagnosing the P0066 SUBARU code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0066 SUBARU Description
The Air Injection System supplies air to the Air Assisted Fuel Injectors using an Air Assist Injector Solenoid Valve. The Air Assist Injector Solenoid Valve supplies air to the Air Assisted Fuel Injectors in order to faster atomize the fuel and provide more efficient combustion. Not only does this improve engine driveability, but lowers vehicle emissions as well. The Diagnostic Trouble Code (DTC) sets when the Air Assist Injector Solenoid Valve has low input with two consecutive drive cycles.