U1502 Code - Implausible Message Data Length Received From TCM
Quick Answer
The Diagnostic Trouble Code (DTC) will set if the Anti-Lock Brakes Module detects bus messages from the Transmission Control Module (TCM) are of improper data length. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission 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
- U1502 indicates Implausible Message Data Length Received From TCM.
- Common causes
- Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission 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.
Code U1502 Description
What are the Possible Causes of the DTC U1502?
- Faulty Transmission Control Module (TCM)
- Transmission Control Module harness is open or shorted
- Transmission Control Module circuit poor electrical connection
- Faulty Anti-Lock Brakes (ABS) Module
How to Fix the DTC U1502?
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 U1502 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.
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Information for Specific Makes
- U1502 Buick — Local Interconnect Network Bus Failure
- U1502 Cadillac — Local Interconnect Network Bus Failure
- U1502 Chevrolet — Local Interconnect Network Bus Failure
- U1502 Chrysler — Implausible Message Data Length Received From TCM
- U1502 Dodge — Implausible Message Data Length Received From TCM
- U1502 GMC — Local Interconnect Network Bus Failure
- U1502 Jeep — Implausible Message Data Length Received From TCM
- U1502 RAM — Implausible Message Data Length Received From TCM
Frequently Asked Questions about U1502 Code
1. What are common symptoms of OBDII code U1502?
- Common symptoms of OBDII code U1502 include transmission shifting issues, illuminated check engine light, and potential loss of communication with the transmission control module.
2. What causes the OBDII code U1502 to be triggered?
- The OBDII code U1502 is triggered when the Engine Control Module (ECM) receives an implausible message data length from the Transmission Control Module (TCM), indicating a communication error.
3. How can I diagnose the OBDII code U1502?
- Diagnosing the OBDII code U1502 involves checking the wiring and connections between the ECM and TCM, verifying the data sent and received, and performing a thorough inspection of the communication system.
4. What repair tips can help resolve the OBDII code U1502?
- Repair tips for resolving the OBDII code U1502 include checking and repairing any damaged wiring, ensuring proper connection between the ECM and TCM, and resetting the fault codes after making necessary repairs.
5. Can a faulty TCM cause the OBDII code U1502?
- Yes, a faulty Transmission Control Module (TCM) can potentially cause the OBDII code U1502 by sending incorrect message data length to the ECM, leading to a communication error.
6. Is it safe to continue driving with the OBDII code U1502 present?
- It is not recommended to continue driving with the OBDII code U1502 present, as it may result in transmission issues and other potential problems that can affect the vehicle's performance and safety.
7. How can I prevent the OBDII code U1502 from reoccurring?
- To prevent the OBDII code U1502 from reoccurring, it is essential to ensure proper maintenance of the vehicle's communication system, address any wiring issues promptly, and follow manufacturer-recommended service intervals.
8. Can a software update fix the OBDII code U1502 issue?
- In some cases, a software update provided by the vehicle manufacturer may help resolve the OBDII code U1502 issue by addressing communication errors between the ECM and TCM.
9. Will resetting the fault codes clear the OBDII code U1502?
- Resetting the fault codes may temporarily clear the OBDII code U1502, but it is crucial to address the underlying issue causing the communication error between the ECM and TCM to prevent the code from reoccurring.
10. How much does it typically cost to repair the OBDII code U1502?
- The cost of repairing the OBDII code U1502 can vary depending on the underlying cause, the extent of the repairs needed, and labor rates. It is recommended to consult with a professional mechanic for an accurate diagnosis and cost estimate.
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