Engine-Codes - Ram - U11C3 RAM

U11C3 RAM - ESM Lost Communication With TCM On DPT CAN

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

U11C3 RAM Possible Causes

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

How is the U11C3 RAM 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 U11C3 RAM code

Labor: 1.0

The cost to diagnose the U11C3 RAM 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)

U11C3 RAM Meaning

The Electronic Shift Module (ESM) communicates with other controllers on the Controller Area Network (CAN) Dedicated Powertrain (DPT) bus. If the ESM looses communication with the other modules on the CAN DPT bus, a Loss of Communication or CAN bus Off Diagnostic Trouble Code (DTC) sets. The Diagnostic Trouble Code (DTC) sets when the ESM looses communication with the Transmission Control Module (TCM) on the CAN DPT bus for more than 300ms.

More Information

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