The automobile fault code P189C indicates a problem with the Transmission Control Module (TCM). The most common symptom is the Engine Light being ON or the Service Engine Soon Warning Light.

The cause of this fault code can be a faulty TCM, an open or shorted TCM harness, or a poor electrical connection in the TCM circuit. To fix this issue, it is recommended to visually inspect the wiring harness and connectors, checking for any damaged components or broken, bent, pushed out, or corroded connector pins.

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

To interpret the fault code, it is important to check the “Possible Causes” listed above and perform the necessary inspections and repairs.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p189c fault code.

  • The symptoms of the automobile fault code p189c include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p189c can be caused by a faulty Transmission Control Module (TCM), an open or shorted TCM harness, or a poor electrical connection in the TCM circuit.

  • The fault code p189c can be caused by the following: a faulty Transmission Control Module (TCM), an open or shorted Transmission Control Module harness, and a poor electrical connection in the Transmission Control Module circuit.

To fix the automobile fault code p189c, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p189c, you need to follow these steps: 1.
  • Check the possible causes mentioned above.
  • 2.
  • Visually inspect the wiring harness and connectors related to the fault code.
  • 3.
  • Look for any damaged components.
  • 4.
  • Check for broken, bent, pushed out, or corroded pins in the connectors.
  • 5.
  • Repairing this fault code is estimated to take approximately 1.0 hour.

The automobile fault code p189c can be diagnosed and fixed within an estimated repair time of 1.0 hour.

The cost of the repair will depend on the hourly rate charged by the auto repair shop, which typically ranges between $75 and $150 per hour.

The P189C fault code is related to the transmission range command message performance in a vehicle.

Control modules in the vehicle monitor communication on the serial data circuits during normal operation. These modules exchange operating information and commands.

Each module keeps track of transmit and receive error counters, which increase with detected errors and decrease with error-free messages. When the transmission range command message performance is not up to standard, the P189C code is set, indicating a potential issue with the transmission range command message.

What are the possible causes of the automobile fault code p189c?

If you see the engine light or service engine soon warning light on, the fault code P189C could be the culprit. 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 the issue, visually inspect the wiring harness and connectors, checking for any damage or corrosion. Also, look out for broken, bent, pushed out, or corroded pins in the connectors.

How can I visually inspect the wiring harness and connectors to fix the p189c fault code?

If you’re dealing with the p189c fault code and your engine light is on, it’s time to take action. The culprit could be a faulty Transmission Control Module (TCM) or an issue with the wiring harness and connectors. To fix it, start by visually inspecting the wiring harness and connectors. Look for any signs of damage, such as broken or bent pins, corrosion, or components that are out of place. This simple step could be the key to resolving the issue and getting your engine running smoothly again. Don’t delay, check it out now!

What should I look for when checking for damaged components and connector pins to resolve the p189c fault code?

When resolving the p189c fault code, start by checking for damaged components and connector pins. This can be done by visually inspecting the related wiring harness and connectors. Look for any signs of damage such as broken, bent, pushed out, or corroded connector pins. By doing this, you can identify any faults in the Transmission Control Module (TCM) or any open or shorted circuits in the TCM harness. Take the necessary steps to repair or replace any damaged components or connector pins to resolve the issue.

p189c error fault code explained

If you see the Engine Light ON or the Service Engine Soon Warning Light, it could be due to a faulty Transmission Control Module (TCM), an open or shorted TCM harness, or a poor electrical connection in the TCM circuit. To fix this, visually inspect the wiring harness and connectors, check for damaged components, and look for any broken, bent, pushed out, or corroded connector pins.

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