[SOLVED] U0008 Code: Fixing High Speed Can Communication Bus (-) High

The automobile fault code U0008 is a Diagnostic Trouble Code (DTC) that triggers the Engine Light ON or Service Engine Soon Warning Light. The cause of this fault code could be a faulty Control Module, an open or shorted Control Module harness, or a poor electrical connection in the Control Module circuit. To fix this issue, one 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.

The repair time for this fault code is estimated to be 1.0.

It is important to diagnose and fix this issue promptly to avoid further damage to the vehicle.

To interpret the fault code, one should check for more codes and refer to the possible causes listed above.

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 u0008 fault code.

Here are the symptoms to look out for:

  • The U0008 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 stability control system, and difficulty starting the engine.
  • Additionally, the vehicle may experience reduced power or acceleration, and the speedometer may not function correctly.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle.

The automobile fault code u0008 can be caused by a range of issues, including faulty control modules and poor electrical connections.

  • The automobile fault code u0008 can be caused by various factors.
  • These include diagnosing the DTC through the vehicle symptom(s), checking for more codes, a faulty Control Module, an open or shorted Control Module harness, and poor electrical connection in the Control Module circuit.
  • It is important to consider all of these causes when attempting to diagnose and fix the issue.

Here are some possible fixes for the automobile fault code u0008:

  • To fix the automobile fault code u0008, 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 factors that influence the cost of diagnosing and fixing the automobile fault code U0008 based on a repair time of 1.0 hour are: – The hourly rate charged by the auto repair shop, which can range from $75 to $150 per hour. – The complexity of the repair required to fix the fault code. – The availability and cost of any necessary replacement parts.

– The experience and expertise of the mechanic performing the repair. – The location of the auto repair shop, as labor rates can vary by region.

The U0008 fault code is related to the High-Speed CAN Communication Bus (-) High. It is a Diagnostic Trouble Code (DTC) that sets when a supervised periodic message is not received. The Controller Area Network (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. When the CAN bus is in idle mode, both lines carry 2.5V.

When data bits are being transmitted, the CAN high line goes to 3.75V, and the CAN low drops to 1.25V, thereby generating a 2.5V differential between the lines.

What are the possible causes of the u0008 automobile fault code?

If your engine light is on and you have a u0008 fault code, it could be due to a faulty control module or a poor electrical connection in the control module circuit. To diagnose the issue, check for more codes and visually inspect the wiring harness and connectors for any damage or corrosion. Look for broken, bent, or pushed out connector pins.

How can the faulty control module be fixed in case of the u0008 fault code?

If you’re experiencing the u0008 fault code, which is indicated by the engine light being on, you may have a faulty control module. To fix this issue, start by checking for any additional codes and visually inspecting the wiring harness and connectors. Look for any damaged components or broken, bent, pushed out, or corroded connector pins. This will help you identify any issues with the control module harness and circuit connections.

What steps should be taken to visually inspect the related wiring harness and connectors in case of the u0008 fault code?

If you encounter the u0008 fault code, which is indicated by the Engine Light ON or Service Engine Soon Warning Light, you should take the following steps to visually inspect the related wiring harness and connectors. First, check for more codes and a faulty Control Module. Then, inspect the wiring harness and connectors for any damage, such as broken, bent, pushed out, or corroded pins. This will help you identify if the Control Module harness is open or shorted, or if there is a poor electrical connection in the Control Module circuit.

u0008 error fault code explained

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

Check for more codes and visually inspect the wiring harness and connectors for damage. Look for broken, bent, pushed out, or corroded connector’s pins.

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