P0066 OBD-II: Air Assisted Injector Control Circuit or Circuit Low

P0066 Severity

Moderate

Will P0066 go away on its own?

Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.

For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.

Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.

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What causes OBD-II fault code P0066?

The Air Assist Injector allows the engine to reach operating temperature faster on startup. When the engine control module (PCM) detects an incorrect signal from the Air Assist Injector, it will set code P0066.

OBD II Fault Code

OBD II P0066

OBD-II Code Increased fuel consumption is defined as a Air Assisted Injector Control Circuit or Circuit Low

Increased fuel consumption Symptoms

Increased fuel consumption

Common Problems That Trigger the P0066 Code

Powertrain Control Module (PCM) failure
Throttle body assembly failure
Wiring issue

Common Repairs Needed for the P0066 Code

Throttle Body Service

OBD Code Resources

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OBD II Fault Code

OBD II P0066

OBD-II Code Increased fuel consumption is defined as a Air Assisted Injector Control Circuit or Circuit Low

Increased fuel consumption Symptoms

Increased fuel consumption

Common Problems That Trigger the P0066 Code

Powertrain Control Module (PCM) failure
Throttle body assembly failure
Wiring issue

Common Repairs Needed for the P0066 Code

Throttle Body Service

P0066 OBD-II: Air Assisted Injector Control Circuit or Circuit Low

Will P0066 go away on its own?

What causes OBD-II fault code P0066?

Need a P0066 diagnosis? Trust our experts.

OBD II Fault Code

Increased fuel consumption Symptoms

Common Problems That Trigger the P0066 Code

Common Repairs Needed for the P0066 Code

OBD Code Resources

Need a P0066 diagnosis? Trust our experts.

Ask our experts about P0066.

Other OBD-II Codes

OBD II Fault Code

Increased fuel consumption Symptoms

Common Problems That Trigger the P0066 Code

Common Repairs Needed for the P0066 Code