[SOLVED] U1343 Code: Fixing Chassis Control Module Lin Bus 1 Issue

The automobile fault code U1343 indicates a problem with the control module, which can trigger the engine light or service engine soon warning light. The cause of this issue can be a faulty control module setting the diagnostic trouble code, an open or shorted control module harness, or a poor electrical connection in the control module circuit. The importance of fixing this issue lies in the fact that it can affect the performance of the vehicle.

The repair difficulty is moderate, and it takes around 1.0 hour to fix. To interpret the fault code, one needs to check the possible causes listed above and visually inspect the related wiring harness and connectors for any damage or corrosion.

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 u1343 fault code.

Here are the symptoms to look out for:

  • The U1343 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, such as difficulty shifting gears or the transmission slipping.
  • The vehicle may also experience a decrease in power or acceleration, and the engine may stall or misfire.
  • Additionally, the vehicle’s fuel efficiency may decrease, and there may be issues with the vehicle’s braking system.

The automobile fault code U1343 can be caused by a faulty control module, open or shorted harness, or poor electrical connection.

  • The automobile fault code U1343 can be caused by a faulty control module that sets the diagnostic trouble code (DTC).
  • It can also be caused by an open or shorted control module harness.
  • Additionally, a poor electrical connection in the control module circuit can also trigger this fault code.
  • These are the three main causes of the U1343 fault code in automobiles.

To fix the u1343 automobile fault code, check the possible causes and inspect the wiring harness, connectors, and components for damage.

  • To fix the automobile fault code u1343, 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 U1343 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 U1343 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 U1343 fault code is related to the Local Interconnect Network (LIN) Bus in a vehicle. The LIN Bus is a single wire that transmits data at a rate of 10.417 Kbits between a master control module and other LIN devices within a subsystem.

If the serial data communication is lost between any of the LIN devices on the LIN bus network, the master control module will set a no communication code against the non-communicating LIN device. The U1343 code specifically refers to a fault in the Chassis Control Module LIN Bus. This fault code sets when a supervised periodic message that includes the transmitter device availability has not been received.

What are the possible causes of the u1343 automobile fault code?

If your engine light is on and you’re seeing the u1343 fault code, it could be due to a faulty control module setting the diagnostic trouble code (DTC), an open or shorted control module harness, or a poor electrical connection in the 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 I visually inspect the related wiring harness and connectors to fix the u1343 fault code?

If you’re experiencing the u1343 fault code, which is indicated by the engine light or service engine soon warning light turning on, there are a few things you can do to fix it. The cause of this issue could be a faulty control module setting the diagnostic trouble code, an open or shorted control module harness, or a poor electrical connection in the control module circuit. To address these issues, you should visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

What are the steps to take if I find damaged components or broken, bent, pushed out, or corroded connector’s pins while fixing the u1343 fault code?

If you encounter damaged components or broken, bent, pushed out, or corroded connector’s pins while fixing the u1343 fault code, follow these steps. First, visually inspect the related wiring harness and connectors. Then, check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. Finally, fix the issue by replacing or repairing the damaged components or connector pins.

u1343 error fault code explained

If your engine light is on and showing the u1343 code, check for a faulty control module, open or shorted harness, or poor electrical connection. Visually inspect the wiring harness and connectors for damage or corrosion.

Look for broken, bent, or pushed out pins.

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