P0666 Code - PCM/ECM/TCM Internal Temperature Sensor 'A' Circuit

What Does P0666 Mean?

Regarding the P0666 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter. When you see P0666 engine fault code on your engine code reader this description will help you.

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What are the common causes of P0666 ?

• Obstructions in the airflow of the radiator or transmission cooler
• Kinked or damaged transmission fluid lines
• Damage to the transmission cooler

How do you troubleshoot P0666 ?

Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio.

Searches related to P0666 Code - PCM/ECM/TCM Internal Temperature Sensor 'A' Circuit

• P0666
• P0667