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

- Code Popularity: 8,624 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0666?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Obstructions in the airflow of the radiator or transmission cooler
  • Kinked or damaged transmission fluid lines
  • Damage to the transmission cooler
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How to Fix the DTC P0666?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0666 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P0666 Description

The control solenoid (w/body and TCM) valve assembly has a built-in TCM temperature sensor to detect possible overtemperature conditions of the Transmission Control Module (TCM). This fault indicates the TCM is in an overtemperature condition and the TCM has shut down to protect from possible heat damage to the TCM. TCM will remain off until the over temperature condition no longer exists.

OBDII Code P0666 - PCM/ECM/TCM Internal Temperature Sensor 'A' Circuit - AutoCodes.com
P0666 Code - PCM/ECM/TCM Internal Temperature Sensor 'A' Circuit

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Code P0666 comments

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