[SOLVED] P0959 Code: Fixing Intermittent Auto Shift Manual Mode Circuit Issue

The automobile fault code P0959 indicates a problem with the Auto Shift Manual Switch.

The most common symptom is the Engine Light being ON or the Service Engine Soon Warning Light.

This fault code can be caused by a faulty Auto Shift Manual Switch, an open or shorted harness, or a poor electrical connection in the circuit. To fix this issue, you should visually inspect the wiring harness and connectors for any damage. Look for broken, bent, pushed out, or corroded pins in the connectors.

The repair time for this issue is estimated to be around 1.0 hour.

It is important to address this problem promptly to prevent further damage to the vehicle.

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 p0959 fault code.

  • The symptoms of the automobile fault code P0959 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p0959 can be caused by a faulty Auto Shift Manual Switch, an open or shorted harness, or a poor electrical connection in the circuit.

  • The fault code P0959 can be caused by the following: 1.
  • Faulty Auto Shift Manual Switch.
  • 2.
  • Open or shorted harness of the Auto Shift Manual Switch.
  • 3.
  • Poor electrical connection in the Auto Shift Manual Switch circuit.

To fix the automobile fault code p0959, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p0959, start by checking the possible causes mentioned above.
  • Then, visually inspect the wiring harness and connectors related to the issue.
  • Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.
  • This fix is estimated to take approximately 1.0 hour.

The factors influencing the diagnosis and fixing cost of the automobile fault code p0959 are the estimated repair time of 1.0 hour and the average hourly rate charged by auto repair shops, which ranges between $75 and $150.

The P0959 fault code refers to a problem with the Auto Shift Manual Mode Circuit. This code is set by the Transmission Control Module (TCM) when it detects that the signal from the Auto Shift Manual Switch is not within the factory specifications. The Auto Shift Manual Switch is responsible for controlling the auto shift manual mode in the vehicle.

When this switch malfunctions or sends an intermittent signal, it triggers the P0959 fault code. If you encounter this fault code, it is important to have it diagnosed and repaired promptly.

Ignoring the issue can lead to further transmission problems and potential damage.

A qualified technician will be able to determine the exact cause of the fault code and perform the necessary repairs to restore proper functionality to the auto shift manual mode circuit.

What are the possible causes for the automobile fault code p0959?

If you see the engine light or service engine soon warning light on, the fault code P0959 could be the culprit. This code is often caused by a faulty auto shift manual switch or issues with the switch’s wiring harness. To fix the problem, start by visually inspecting the wiring harness and connectors. Look for any signs of damage or corrosion. Additionally, check for broken, bent, or pushed out connector pins. Taking these steps can help you identify and resolve the issue.

How can I visually inspect the wiring harness and connectors to fix the issue?

To fix the issue of the Engine Light being ON or the Service Engine Soon Warning Light, start by checking the possible causes, such as a faulty Auto Shift Manual Switch or an open or shorted harness. Then, visually inspect the wiring harness and connectors for any signs of damage. Look out for broken, bent, pushed out, or corroded pins on the connectors. This thorough inspection will help identify and resolve the issue effectively.

What should I look for when checking for damaged components or corroded connector pins?

When troubleshooting an engine light or service engine soon warning light, it’s important to check for damaged components and corroded connector pins. These issues can be the cause of a faulty auto shift manual switch or poor electrical connection in the auto shift manual switch circuit. To fix the problem, visually inspect the wiring harness and connectors, paying close attention to any signs of damage. Look for broken, bent, pushed out, or corroded pins on the connectors.

p0959 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 Auto Shift Manual Switch or issues with the wiring harness and connectors. To fix this, visually inspect the wiring harness and connectors for any damage or corrosion. Also, check for broken or bent pins.

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