The automobile fault code U1146 indicates a problem with the Transmission Control Module (TCM) 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 TCM, an open or shorted TCM harness, or a poor electrical connection in the TCM circuit.

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, checking for damaged components, and looking for broken, bent, pushed out, or corroded connector’s pins.

The repair time for this fault code is estimated to be 1.0 hour. It is crucial to interpret the fault code correctly to ensure the proper repair is performed.

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 u1146 fault code. Here are the symptoms to look out for:

  • The U1146 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 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 emissions.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle.

The automobile fault code u1146 can be caused by a faulty TCM, open or shorted TCM harness, or poor electrical connection.

  • The automobile fault code U1146 can be caused by a faulty Transmission Control Module (TCM).
  • It can also be caused by an open or shorted TCM harness.
  • Additionally, a poor electrical connection in the Transmission Control Module (TCM) circuit can also trigger this fault code.

Below are some possible fixes for the automobile fault code u1146, including inspecting wiring harness and connectors for damage or corrosion.

  • To fix the automobile fault code u1146, you need to check the possible causes listed above.
  • Visually inspect the related wiring harness and connectors for any damage.
  • Look 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 U1146 indicates a communication problem between the engine control module and the instrument cluster. The estimated repair time for this fault code is 1.0 hour.

The cost of fixing this fault code is influenced by the hourly rate charged by the auto repair shop, which is typically between $75 and $150 per hour.

Other factors that may affect the cost include the severity of the problem, the type of vehicle, and the availability of replacement parts.

When you start your vehicle, the Transmission Control Module (TCM) receives hydraulic calibration data from an external EEPROM located in the transmission. If the TCM cannot read the external EEPROM, the U1146 fault code will be triggered.

This code indicates that there is a lost communication with external memory.

The MIL (Malfunction Indicator Lamp) will only turn on after two consecutive failures.

What are the possible causes of the u1146 automobile fault code?

If you see the engine light on or the service engine soon warning light, it could be due to the u1146 automobile fault code. This code is often caused by a faulty Transmission Control Module (TCM), an open or shorted TCM harness, or a poor electrical connection in the TCM 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 u1146 fault code?

If you’re experiencing the u1146 fault code, which is indicated by the engine light being on or the service engine soon warning light, there are a few things you can do to fix it. The issue may be caused by a faulty Transmission Control Module (TCM), an open or shorted TCM harness, or a poor electrical connection in the TCM circuit. To address these potential causes, you should visually inspect the related wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.

What are the consequences of ignoring the u1146 fault code?

Ignoring the u1146 fault code can lead to serious consequences such as reduced fuel efficiency, engine misfires, and even transmission failure. The fault code is usually caused by a faulty Transmission Control Module (TCM), an open or shorted TCM harness, or poor electrical connection. To fix the issue, it is important to visually inspect the related wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

u1146 error fault code explained

If your engine light is on and the fault code is u1146, it may be due to a faulty Transmission Control Module (TCM), an open or shorted TCM harness, or a poor electrical connection.

To fix it, visually inspect the wiring harness and connectors for damage and check for broken, bent, pushed out, or corroded connector pins.

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