The automobile fault code U1138 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.

To interpret the fault code, it is recommended to check the “Possible Causes” listed above and look for any broken, bent, pushed out, or corroded connector’s pins.

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 (or Service Engine Soon Warning Light), it could be due to the u1138 fault code.

Here are the symptoms to look out for:

  • The automobile fault code U1138 has the following symptoms: Engine Light ON, Service Engine Soon Warning Light ON.

The automobile fault code u1138 can be caused by a faulty module, open or shorted module harness, or poor electrical connection.

  • The automobile fault code U1138 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.
  • These are the three main causes of the U1138 fault code in automobiles.

Below are some possible fixes for the automobile fault code u1138, including inspecting wiring harness and connectors for damage or corrosion.

  • To fix the automobile fault code u1138, first, check the possible causes listed above.
  • Then, visually inspect the related wiring harness and connectors.
  • Look for any damaged components and check for broken, bent, pushed out, or corroded connector’s pins.
  • This fix will take an estimated repair time of 1.0 hour.

The fault code U1138 indicates a communication issue between the vehicle’s control module and the instrument cluster.

The estimated repair time for this fault code is 1.0 hour. The cost of fixing this issue can vary depending on the auto repair shop, but it is common for them to charge between $75 and $150 per hour. Other factors that may influence the cost include the location of the repair shop, the type of vehicle, and the severity of the issue.

The U1138 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 U1138 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 u1138 automobile fault code?

If you see the engine light on or the service engine soon warning light, it could be due to the u1138 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 I visually inspect the related wiring harness and connectors to fix the u1138 fault code?

If you’re experiencing the u1138 fault code, start by checking the “Possible Causes” listed above. To visually inspect the related wiring harness and connectors, look for damaged components and check for broken, bent, pushed out, or corroded connector’s pins. This will help you identify any open or shorted module harnesses or poor electrical connections that may be causing the issue.

What are the signs of damaged components that I should look for when fixing the u1138 fault code?

If you’re dealing with a u1138 fault code, keep an eye out for the engine light turning on or the service engine soon warning light. The cause of this issue could be a faulty module that isn’t communicating, an open or shorted module harness, or a module circuit with poor electrical connection. To fix the problem, check the possible causes listed above and visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

u1138 error fault code explained

If your engine light is on, it could be due to a faulty module or poor electrical connection.

Check the wiring harness and connectors for damage or corrosion. Look for broken, bent, or pushed out pins.

Inspect the module and circuit for any issues.

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