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U019E Buick Code - Lost Communication With Transmission Range Control Module

Quick Answer

The U019E Buick diagnostic trouble code indicates that there is a communication error between the vehicle's engine control module (ECM) and the transmission range control module (TRCM). Common causes include Faulty wiring or connectors, Malfunctioning TRCM, ECM software glitches. 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 Buick indicates Lost Communication With Transmission Range Control Module.
Common causes
Common causes include Faulty wiring or connectors, Malfunctioning TRCM, ECM software glitches.
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 14, 2024
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Code U019E Buick Description

The U019E Buick diagnostic trouble code indicates that there is a communication error between the vehicle's engine control module (ECM) and the transmission range control module (TRCM). The TRCM is responsible for controlling the transmission's shifting patterns based on the vehicle's speed, engine load, and other factors. When communication is lost with the TRCM, it can lead to issues with the transmission's performance and overall drivability of the vehicle.

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

Common Causes of U019E Buick

  1. Faulty wiring or connectors
  2. Malfunctioning TRCM
  3. ECM software glitches
  4. Electrical interference
  5. Corrosion or water damage

Symptoms of U019E Buick

  1. Harsh or delayed shifting
  2. Transmission slipping
  3. Stuck in a particular gear
  4. Limp mode activation

How to Fix U019E Buick

  1. Perform a thorough inspection of the wiring harness and connectors for any damage or corrosion.
  2. Check the TRCM for proper functionality and replace if necessary.
  3. Update the ECM software to the latest version to address any glitches.
  4. Clear the diagnostic trouble codes and perform a test drive to ensure proper transmission operation.
  5. If the issue persists, further diagnostic testing may be required to pinpoint the exact cause of the communication error.

Cost to Fix U019E Buick

The typical repair costs for addressing a U019E Buick code can range from $200 to $500, depending on the specific cause of the communication error and the labor rates at the auto repair shop. It's important to note that diagnosis time and labor rates can vary, so it's advisable to check with local shops for a more accurate estimate. Additionally, the cost of any necessary parts or software updates should be factored into the overall repair cost.

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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 Buick Code

1. What does the OBDII code U019E mean on a Buick?

The U019E code indicates that the vehicle has lost communication with the Transmission Range Control Module (TRCM).

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

Symptoms may include transmission not shifting properly, warning lights on the dashboard, erratic gear selection, or the vehicle being stuck in a single gear.

3. What causes the U019E code to appear?

Common causes include damaged wiring, a faulty Transmission Range Control Module, corroded or loose electrical connectors, or issues with the CAN bus network.

4. Can I drive my Buick with a U019E code?

Driving with this code is not recommended, as it can lead to poor transmission performance and potentially damage other components.

5. How can I diagnose the U019E code on my Buick?

Start by inspecting the wiring and connectors around the TRCM for damage or corrosion. Use a scan tool to check for related codes and monitor CAN bus communication.

6. How do I fix the U019E code on a Buick?

Repairs may involve fixing or replacing damaged wiring, cleaning or securing electrical connectors, or replacing the faulty Transmission Range Control Module.

7. What tools are needed to troubleshoot the U019E code?

You’ll need a diagnostic scan tool capable of reading manufacturer-specific codes and monitoring the CAN bus network, as well as basic tools for inspecting wiring and connectors.

8. Is the U019E code specific to Buicks only?

No, the U019E code can appear in other vehicles as well, but the location and specifics of the Transmission Range Control Module may vary.

9. How much does it cost to repair a U019E code on a Buick?

Repair costs can range from $50 for minor wiring repairs to $1,000 or more if the Transmission Range Control Module needs replacement.

10. Can a low battery cause the U019E code on a Buick?

Yes, a weak or failing battery or charging system can disrupt communication with the TRCM and trigger this code. Always check the battery voltage first.

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