Engine-Codes - Generic - U11C8

U11C8 - Lost Engine Coolant Temperature Message

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

U11C8 Possible Causes

  • Faulty Transmission Control Module (TCM)
  • Transmission Control Module harness is open or shorted
  • Transmission Control Module circuit poor electrical connection

How is the U11C8 code repair?

Start by checking 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.

What is the cost to diagnose the U11C8 code

Labor: 1.0

The cost to diagnose the U11C8 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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Possible Symptoms

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

U11C8 Meaning

This diagnostic determines the availability of the Engine Coolant Temperature (ECT) signal sent by the Powertrain Control Module (PCM) via a CAN message. The diagnostic determines the availability by checking the received value is not equal to the Signal Not Available (SNA) default value. When the signal is not available, the PCM sends a Signal Not Available (SNA) default value to the Transmission Control Module (TCM). If the TCM reads this value then the Diagnostic Trouble Code (DTC) U11C8 is set.

More Information

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