Having a Jeep U1134 code indicates that your Jeep’s Powertrain Control Module (PCM) is either not receiving a Stop/Start bus message or an implausible bus message from the Body Control Module (BCM). This code can indicate several issues, ranging from STOP/START SWITCH WIRING ISSUE to STOP/START SWITCH, and even the BODY CONTROL MODULE (BCM) itself. To properly diagnose and fix the issue, it is essential to identify the cause.
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Causes and Solutions to Jeep U1134 Code
| Cause | Solution |
|---|---|
| STOP/START SWITCH WIRING ISSUE | Check and verify the wiring of the STOP/START SWITCH |
| STOP/START SWITCH | Replace the STOP/START SWITCH if necessary |
| BODY CONTROL MODULE (BCM) | Test the BODY CONTROL MODULE (BCM) and replace it if necessary |
| Other Issues | Check other possible issues and repair them accordingly |
STOP/START SWITCH WIRING ISSUE
If your Jeep has a U1134 code, then the first thing you should do is check and verify the wiring of the STOP/START SWITCH. If there are any issues with the wiring, you should repair or replace the wiring as necessary. Doing this can prevent any further problems arising from faulty wiring.
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STOP/START SWITCH
If the wiring checks out, move on to the STOP/START SWITCH. This switch allows the PCM to start and stop the engine. If the button is not working correctly, then it can cause the U1134 code to appear. In this case, you may need to replace the switch.
BODY CONTROL MODULE (BCM)
If the STOP/START SWITCH is working correctly, then you should move on to testing the BODY CONTROL MODULE (BCM). The BCM is responsible for sending the necessary messages to the PCM. If there is an issue with the BCM, then it can cause the U1134 code to appear. If the BCM is not working correctly, you may need to replace it.
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Other Issues
Finally, you should check for other possible issues causing the U1134 code. This could include a faulty wiring harness, a bad ground connection, or even a faulty PCM. If any of these issues are present, you should repair or replace them.
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Conclusion
Having a Jeep U1134 code can be indicative of several issues. To properly diagnose and repair the problem, it is essential to identify the cause. This could include a STOP/START SWITCH WIRING ISSUE, a faulty STOP/START SWITCH, a defective BODY CONTROL MODULE (BCM), or any other issue. With the proper diagnosis and repair, you can get your Jeep running correctly again and avoid any further problems with the Jeep U1134 Code.