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U019E Cadillac Code - Lost Communication With Transmission Range Control Module

Quick Answer

The U019E code indicates that the vehicle's onboard computer has lost communication with the Transmission Range Control Module (TRCM). Common causes include Faulty wiring or connectors, Malfunctioning TRCM, Software glitch in the vehicle's computer system. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
U019E Cadillac indicates Lost Communication With Transmission Range Control Module.
Common causes
Common causes include Faulty wiring or connectors, Malfunctioning TRCM, Software glitch in the vehicle's computer system.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code U019E Cadillac Description

The U019E code indicates that the vehicle's onboard computer has lost communication with the Transmission Range Control Module (TRCM). The TRCM is responsible for controlling the transmission's gear selection, ensuring smooth shifting, and coordinating with the engine and other vehicle systems. When communication is lost with this module, it can lead to significant issues with the vehicle's performance and drivability.

OBDII Code U019E Cadillac - Lost Communication With Transmission Range Control Module
U019E Cadillac Code - Lost Communication With Transmission Range Control Module

Common Causes of U019E Cadillac

  1. Faulty wiring or connectors
  2. Malfunctioning TRCM
  3. Software glitch in the vehicle's computer system
  4. Low battery voltage affecting communication between modules

Symptoms of U019E Cadillac

  1. Difficulty shifting gears
  2. Erratic or harsh shifting
  3. Stalling
  4. Vehicle going into limp mode
  5. Check engine light illuminated

How to Fix U019E Cadillac

  1. Perform a thorough inspection of the wiring and connectors related to the TRCM. Repair or replace any damaged components.
  2. Test the TRCM for proper function and replace if necessary.
  3. Check for any software updates for the vehicle's computer system that may address communication issues.
  4. Clear the diagnostic trouble codes and reset the vehicle's computer system to see if the issue resolves.
  5. Test drive the vehicle to ensure proper shifting and communication between modules.

Cost to Fix U019E Cadillac

The cost of repairing the U019E code can vary depending on the specific cause of the issue. On average, the repair costs for this type of problem can range from $200 to $500, including parts and labor. However, it is essential to note that diagnosis time and labor rates at auto repair shops can vary significantly based on location, vehicle make and model, and engine type. It is advisable to check with local shops for a more accurate estimate of repair costs.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U019E Cadillac Code

1. What does OBDII code U019E mean on a Cadillac?

Code U019E indicates a lost communication issue between the Transmission Range Control Module and other vehicle systems.

2. What are the common symptoms of code U019E on a Cadillac?

Symptoms may include transmission not shifting properly, erratic gear behavior, or the vehicle stuck in limp mode.

3. What causes code U019E on a Cadillac?

Common causes include faulty wiring, damaged connectors, a malfunctioning Transmission Range Control Module, or network communication issues.

4. Can a weak battery cause code U019E on a Cadillac?

Yes, a weak or failing battery can disrupt communication between modules, potentially triggering this code.

5. How is code U019E diagnosed on a Cadillac?

Diagnosis typically involves checking the wiring and connectors for damage, scanning the network for communication issues, and testing the Transmission Range Control Module.

6. Can code U019E cause transmission problems on a Cadillac?

Yes, communication loss with the Transmission Range Control Module can result in improper transmission function or limp mode.

7. How do you fix code U019E on a Cadillac?

Repairs may involve replacing damaged wiring, repairing connectors, reprogramming modules, or replacing the Transmission Range Control Module if necessary.

8. Is code U019E related to other transmission codes on a Cadillac?

It can be linked to other transmission-related codes if communication issues affect multiple modules in the vehicle.

9. Can code U019E be caused by water damage?

Yes, water intrusion into connectors or wiring can lead to communication failures and trigger this code.

10. Will clearing code U019E fix the issue permanently?

Clearing the code may temporarily remove it, but the underlying communication issue must be resolved to prevent it from returning.

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