[SOLVED] U0103 Code: How To Fix Lost Communication With Gear Shift Module

The automobile fault code U0103 indicates a problem with the Gear Shift Control Module ‘A’ in your vehicle. The most common symptom is the illumination of the Engine Light or Service Engine Soon Warning Light.

The cause of this fault code could be a faulty module, an open or shorted harness, or a poor electrical connection.

It is important to address this issue promptly as it can affect the performance of your vehicle.

The repair process involves visually inspecting the wiring harness and connectors for any damage or corrosion. The difficulty level of this repair is moderate, and it can take up to 1.0 hour to fix. To interpret the fault code, it is recommended to check the possible causes listed above and visually inspect the related components.

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 a sign of u0103 fault code. Here are the symptoms to look out for:

  • The automobile fault code u0103 has the following symptoms: Engine Light ON, Service Engine Soon Warning Light, issues with the transmission shifting, problems with the speedometer, issues with the cruise control, and the vehicle may not start or may stall while driving.

The automobile fault code u0103 can be caused by a faulty module or poor electrical connection.

  • The automobile fault code u0103 can be caused by a faulty Gear Shift Control Module ‘A’.
  • It can also be caused by an open or shorted harness in the Gear Shift Control Module ‘A’.
  • Additionally, a poor electrical connection in the Gear Shift Control Module ‘A’ circuit can also trigger this fault code.

Below are some possible fixes for the automobile fault code u0103, including inspecting wiring harness and connectors for damage or corrosion.

  • To fix the automobile fault code u0103, 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 automobile fault code U0103 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 diagnosis and fixing the U0103 fault code will depend on the hourly rate charged by the auto repair shop and the estimated repair time required to fix the issue.

The U0103 code is a Controller Area Network (CAN) fault code.

CAN is a vehicle bus standard designed to interconnect automotive devices without a host computer.

CAN bus uses two dedicated wires for communication, CAN high and CAN low. The U0103 code sets when a periodic message from the Gear Shift Control Module ‘A’ has not been received.

This code indicates that there is a lost communication with the Gear Shift Control Module ‘A’.

What are the possible causes of the u0103 automobile fault code?

If you see the engine light on or the service engine soon warning light, it could be due to the u0103 fault code. This code is caused by a faulty gear shift control module ‘A’, an open or shorted harness, or a poor electrical connection in the gear shift control module ‘A’ circuit. To fix this issue, you should visually inspect the 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 u0103 fault code?

If you’re experiencing an engine light or service engine soon warning light with a u0103 fault code, it could be due to a faulty gear shift control module ‘A’, an open or shorted harness, or poor electrical connection. To fix this issue, start by visually inspecting the related wiring harness and connectors. Check for any damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

What are the specific steps to take when checking for damaged components and looking for broken, bent, pushed out, or corroded connector’s pins to fix the u0103 fault code?

If you’re experiencing the u0103 fault code, start by checking the possible causes: a faulty Gear Shift Control Module ‘A’, an open or shorted harness, or poor electrical connection in the circuit. Visually inspect the wiring harness and connectors, looking for damaged components and broken, bent, pushed out, or corroded connector’s pins.

u0103 error fault code explained

If your engine light is on and the fault code is u0103, it may be due to a faulty gear shift control module ‘A’, an open or shorted harness, or poor electrical connection. Visually inspect the wiring harness and connectors for damage or corrosion.

Check for broken, bent, or pushed out connector pins.

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