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AutoCodes - Generic - C1774

C1774 Code - Coolant Temperature Out of Range

- Code Popularity: 4,299 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC C1774?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Coolant Temperature Sensor
  • Coolant Temperature Sensor harness is open or shorted
  • Coolant Temperature Sensor circuit poor electrical connection
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How to Fix the DTC C1774?

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 C1774 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?

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

Code C1774 Description

The Anti-Lock Brake System (ABS) Module monitors the Coolant Temperature Sensor. The ABS Module sets the OBDII code when the Coolant Temperature Sensor is not to factory specifications.

OBDII Code C1774 - Coolant Temperature Out of Range - AutoCodes.com
C1774 Code - Coolant Temperature Out of Range

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Code C1774 comments

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