The automobile fault code U1139 indicates a problem with a module that is not communicating properly. This can cause the engine light to turn on, indicating a need for service. The cause of this issue could be a faulty module, an open or shorted module harness, or a poor electrical connection in the module circuit.

It is important to visually inspect the wiring harness and connectors for any damage or corrosion. The repair time for this issue is estimated to be around 1.0, and it is crucial to address this problem promptly to avoid further damage to the vehicle.

To interpret the fault code, it is recommended to check the “Possible Causes” listed above and inspect the related components thoroughly.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

If you notice the Engine Light ON, it could be due to the u1139 fault code, which is accompanied by the following symptoms:

  • The automobile fault code U1139 has the following symptoms: Engine Light ON, Service Engine Soon Warning Light ON, ABS Light ON, Traction Control Light ON, and the speedometer may not work properly.

The automobile fault code u1139 can be caused by a faulty module, open or shorted module harness, or poor electrical connection.

  • The automobile fault code U1139 can be caused by a faulty module that is not communicating.
  • It can also be caused by an open or shorted module harness.
  • Additionally, a poor electrical connection in the module circuit can also trigger this fault code.

To fix the u1139 automobile fault code, check the possible causes and inspect the related wiring harness, connectors, and components for damage.

  • To fix the automobile fault code u1139, you need to check the possible causes listed above.
  • Visually inspect the related wiring harness and connectors for any damage.
  • Look for broken, bent, pushed out, or corroded connector’s pins.
  • This fix will take an estimated repair time of 1.0 hour.

The automobile fault code U1139 can be diagnosed and fixed within an estimated repair time of 1.0 hour.

The cost of repair is influenced by the hourly rate charged by the auto repair shop, which typically ranges between $75 and $150 per hour. Therefore, the total cost of fixing the U1139 fault code will depend on the hourly rate charged by the auto repair shop and the estimated repair time required to diagnose and fix the issue.

The U1139 fault code is related to the class 2 serial data circuit in automobiles. Modules in the circuit monitor for serial data communications during normal vehicle operation. When a module does not associate an identification number with at least one critical parameter within 5 seconds of beginning serial data communication, the U1139 Diagnostic Trouble Code (DTC) is set.

This code indicates that there is invalid or missing data for Primary I.

What are the possible causes of the u1139 automobile fault code?

If you see the engine light on or the service engine soon warning light, it could be due to the u1139 automobile fault code. This code is usually caused by a faulty module that is not communicating, an open or shorted module harness, or a poor electrical connection in the module circuit. To fix this issue, you should visually inspect the related wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

How can one visually inspect the related wiring harness and connectors to fix the u1139 fault code?

If you’re experiencing the u1139 fault code, which is indicated by the engine light being on, you may have a faulty module that is not communicating, an open or shorted module harness, or a poor electrical connection in the module circuit. To fix this issue, start by visually inspecting the related wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. This will help you identify any issues and determine the best course of action to resolve the problem.

What are the consequences of ignoring the u1139 fault code?

Ignoring the u1139 fault code can lead to serious consequences such as reduced fuel efficiency, engine misfires, and even engine failure. The fault code indicates a faulty module that is not communicating, an open or shorted module harness, or poor electrical connection. It is important to visually inspect the related wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins to fix the issue.

u1139 error fault code explained

If your engine light is on and you have a U1139 fault code, it could be due to a faulty module or poor electrical connection. To fix it, visually inspect the wiring harness and connectors for damage or corrosion. Check for broken or bent pins.

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