AutoCodes – Generic – U019E

U019E Code - Lost Communication With Transmission Range Control Module

Quick Answer

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Transmission Range Control Module, Transmission Range Control Module harness is open or shorted, Transmission Range Control Module circuit poor electrical connection. 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 indicates Lost Communication With Transmission Range Control Module.
Common causes: Common causes include Faulty Transmission Range Control Module, Transmission Range Control Module harness is open or shorted, Transmission Range Control Module circuit poor electrical connection.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 5,301

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 02, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U019E Description

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Transmission Range Control Module has not been received.

OBDII Code U019E - Lost Communication With Transmission Range Control Module - AutoCodes.com — U019E Code - Lost Communication With Transmission Range Control Module

What does this mean?

What are the Possible Causes of the DTC U019E?

Faulty Transmission Range Control Module
Transmission Range Control Module harness is open or shorted
Transmission Range Control Module circuit poor electrical connection

How to Fix the DTC U019E?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U019E code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the U019E code?

Need more information on how to fix the U019E code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U019E code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U019E Buick — Lost Communication With Transmission Range Control Module
U019E Cadillac — Lost Communication With Transmission Range Control Module
U019E Chevrolet — Lost Communication With Transmission Range Control Module
U019E GMC — Lost Communication With Transmission Range Control Module

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 Code

1. What are common symptoms of OBDII code U019E, Lost Communication With Transmission Range Control Module?

- Common symptoms include issues shifting gears, transmission slipping, and the transmission getting stuck in a single gear.

2. What are possible causes of OBDII code U019E?

- Possible causes include a faulty transmission range control module, damaged wiring or connectors, a software issue, or a communication network problem.

3. How can I diagnose the cause of OBDII code U019E?

- Diagnose the issue by checking for other related codes, inspecting the wiring and connectors for damage, testing the transmission range control module, and ensuring the communication network is functioning properly.

4. Can OBDII code U019E be fixed by resetting the vehicle's computer?

- While resetting the computer may temporarily clear the code, it is important to diagnose and address the root cause of the communication issue to prevent the code from reoccurring.

5. Is it safe to continue driving with OBDII code U019E present?

- It is not recommended to continue driving with this code present, as it can lead to transmission issues and potentially unsafe driving conditions.

6. Are there any DIY repair tips for fixing OBDII code U019E?

- DIY repair tips include checking and cleaning the connectors, inspecting the wiring for damage, and ensuring all connections are secure before seeking professional assistance.

7. Can a software update fix OBDII code U019E?

- In some cases, a software update from the manufacturer may resolve the communication issue and clear the code. Consult with a professional technician for guidance on software updates.

8. How much does it typically cost to repair OBDII code U019E?

- Repair costs can vary depending on the root cause of the issue, but expect to pay for diagnostic testing, parts replacement, and labor. Costs can range from a few hundred to over a thousand dollars.

9. Will OBDII code U019E cause my vehicle to fail an emissions test?

- Yes, this code can cause your vehicle to fail an emissions test, as it indicates a communication issue within the transmission system that can affect emissions control.

10. Can a transmission fluid change resolve OBDII code U019E?

- While a transmission fluid change is important for overall transmission health, it is unlikely to resolve the specific communication issue indicated by OBDII code U019E.