The automobile fault code U0140 indicates a problem with the Controller Area Network (CAN) communication system or the Body Control Module (BCM). 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 BCM, an open or shorted BCM harness, or a poor electrical connection in the BCM circuit. The importance of repairing this issue lies in the fact that it can affect the overall performance of the vehicle.

The repair difficulty is moderate, and the repair time is estimated to be around 1.0 hour.

To fix this issue, one should visually inspect the wiring harness and connectors, check for damaged components, and look for 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 a sign of u0140 fault code.

Here are the symptoms to look out for:

  • The U0140 fault code in an automobile can cause several symptoms, including the engine light turning on or the service engine soon warning light appearing.
  • Other symptoms may include issues with the vehicle’s transmission, problems with the anti-lock brake system, and difficulty starting the engine.
  • Additionally, the vehicle’s speedometer may not work correctly, and the engine may stall or run roughly.
  • It is essential to address these symptoms promptly to prevent further damage to the vehicle and ensure safe driving conditions.

The automobile fault code u0140 can be caused by a faulty CAN communication system, BCM, harness, or electrical connection.

  • The automobile fault code U0140 can be caused by a faulty Controller Area Network (CAN) Communication System.
  • It can also be caused by a faulty Body Control Module (BCM).
  • Another cause of this fault code is an open or shorted Body Control Module harness.
  • Lastly, a poor electrical connection in the Body Control Module circuit can also trigger the U0140 fault code.

To fix the u0140 fault code, check the possible causes and inspect the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code u0140, first, check the possible causes listed above.
  • Then, 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 fix will take an estimated repair time of 1.0 hour.

The automobile fault code U0140 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 U0140 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 U0140 fault code indicates a loss of communication with the Body Control Module (BCM). The BCM is responsible for controlling various electrical components in the vehicle, such as the power windows, locks, and lighting. The Controller Area Network (CAN) is a standard bus system in vehicles that enables the connection of automotive devices without the need for a host computer.

The exchange of operating information and commands among devices is facilitated by pre-programmed information about the required message exchange on the serial data circuits.

Communication is carried out using two dedicated wires, known as CAN high and CAN low. The Diagnostic Trouble Code (DTC) sets when a periodic message from the BCM has not been received.

What are the possible causes of the u0140 automobile fault code?

If you notice the engine light on or the service engine soon warning light, it could be due to the u0140 fault code. This code is caused by a faulty Controller Area Network (CAN) Communication System, a faulty Body Control Module (BCM), an open or shorted Body Control Module harness, or a poor electrical connection in the Body Control 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 u0140 fault code?

If you’re experiencing an Engine Light ON or Service Engine Soon Warning Light due to a u0140 fault code, there are a few things you can do to fix it. First, check for a faulty Controller Area Network (CAN) Communication System or Body Control Module (BCM). If those are not the issue, 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 will help you identify any open or shorted circuits or poor electrical connections in the Body Control Module harness.

What are the steps to take when checking for damaged components and looking for broken, bent, pushed out, or corroded connector’s pins to fix the u0140 fault code?

If you’re experiencing the u0140 fault code, which is indicated by the Engine Light ON or Service Engine Soon Warning Light, there are a few steps you can take to fix it. First, check the possible causes, which include a faulty Controller Area Network (CAN) Communication System, a faulty Body Control Module (BCM), an open or shorted Body Control Module harness, or a poor electrical connection in the Body Control Module circuit. Next, visually inspect the related wiring harness and connectors. Finally, check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

u0140 error fault code explained

If your engine light is on and you have a u0140 fault code, check for faulty CAN communication system, BCM, or poor electrical connection. Visually inspect wiring harness and connectors for damage or corrosion.

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

Scroll to Top