U1501 Code - Implausible Message Data Length Received From ECM/PCM
Quick Answer
The Diagnostic Trouble Code (DTC) will set if the Anti-Lock Brakes (ABS) Module detects bus messages from the Engine Control Module (ECM) or Powertrain Control Module (PCM) are of improper data length. Common causes include Faulty Engine Control Module (ECM) or Powertrain Control Module (PCM), Engine Control Module or Powertrain Control Module harness is open or shorted, Engine Control Module or Powertrain 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
- U1501 indicates Implausible Message Data Length Received From ECM/PCM.
- Common causes
- Common causes include Faulty Engine Control Module (ECM) or Powertrain Control Module (PCM), Engine Control Module or Powertrain Control Module harness is open or shorted, Engine Control Module or Powertrain 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 U1501 Description
What are the Possible Causes of the DTC U1501?
- Faulty Engine Control Module (ECM) or Powertrain Control Module (PCM)
- Engine Control Module or Powertrain Control Module harness is open or shorted
- Engine Control Module or Powertrain Control Module circuit poor electrical connection
- Faulty Anti-Lock Brakes (ABS) Module
How to Fix the DTC U1501?
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 U1501 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 U1501 code?
Need more information on how to fix the U1501 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the U1501 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- U1501 Buick — Local Interconnect Network Bus Failure
- U1501 Cadillac — Local Interconnect Network Bus Failure
- U1501 Chevrolet — Local Interconnect Network Bus Failure
- U1501 Chrysler — Implausible Message Data Length Received From ECM/PCM
- U1501 Dodge — Implausible Message Data Length Received From ECM/PCM
- U1501 GMC — Local Interconnect Network Bus Failure
- U1501 Jeep — Implausible Message Data Length Received From ECM/PCM
- U1501 RAM — Implausible Message Data Length Received From ECM/PCM
Frequently Asked Questions about U1501 Code
1. What are the common symptoms of OBDII code U1501?
- Common symptoms include engine stalling, rough idling, poor acceleration, and issues with shifting gears.
2. What can cause the OBDII code U1501 to trigger?
- The code U1501 is typically triggered by communication issues between the electronic control module (ECM) or powertrain control module (PCM) and other vehicle modules.
3. How can I diagnose the OBDII code U1501?
- Diagnosing code U1501 involves checking the communication lines between the ECM/PCM and other modules for any faults or shorts, as well as verifying the integrity of the data being transmitted.
4. What are some possible repair tips for resolving code U1501?
- Repair tips for code U1501 may include checking and repairing any damaged wiring or connectors, resetting the ECM/PCM, or updating the vehicle's software to address communication issues.
5. Can a faulty ECM/PCM cause code U1501 to appear?
- Yes, a faulty ECM/PCM can sometimes trigger code U1501 due to communication errors or malfunctions within the module itself.
6. Will driving with the OBDII code U1501 pose any risks to my vehicle?
- Continuing to drive with code U1501 may lead to further communication issues between vehicle modules, potentially affecting the overall performance and safety of the vehicle.
7. How can I prevent OBDII code U1501 from reoccurring?
- To prevent code U1501 from reoccurring, it is essential to regularly maintain the vehicle's electrical system, check for any wiring faults, and address any communication problems promptly.
8. Is it safe to clear the OBDII code U1501 without addressing the underlying issue?
- Clearing the code without fixing the root cause may temporarily remove the warning light, but the underlying issue leading to code U1501 will persist and may trigger the code again in the future.
9. Can a DIY enthusiast fix OBDII code U1501 at home?
- DIY enthusiasts with the necessary tools and knowledge of automotive electrical systems may be able to diagnose and repair code U1501 at home, but it is recommended to seek professional help if unsure.
10. How much does it typically cost to repair OBDII code U1501 at a mechanic or dealership?
- Repair costs for code U1501 can vary depending on the extent of the issue, but it may range from $100 to $500 at a mechanic or dealership, including diagnosis and necessary repairs.
Discuss the causes and fixes for U1501 OBDII Code
Code U1501 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
