[SOLVED] P099C Code: Fixing High Control Circuit In Shift Solenoid ‘g’

The automobile fault code P099C indicates a problem with the Shift Solenoid ‘G’ in the vehicle’s transmission system. 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 Shift Solenoid ‘G’, an open or shorted harness, or a poor electrical connection in the Shift Solenoid ‘G’ circuit.

To fix this issue, it is recommended to 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 fault code promptly to prevent further damage to the transmission system.

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 p099c fault code.

  • The symptoms of the automobile fault code p099c include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p099c can be caused by a faulty Shift Solenoid ‘G’, an open or shorted Shift Solenoid ‘G’ harness, or a poor electrical connection in the Shift Solenoid ‘G’ circuit.

  • The fault code P099C can be caused by the following: 1.
  • Faulty Shift Solenoid ‘G’.
  • 2.
  • Shift Solenoid ‘G’ harness is open or shorted.
  • 3.
  • Shift Solenoid ‘G’ circuit has a poor electrical connection.

To fix the automobile fault code p099c, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p099c, first, check 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.
  • The estimated repair time for this fix is 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code p099c include the estimated repair time of 1.0 hour.

Auto repair shops typically charge between $75 and $150 per hour for their services. These factors contribute to the overall cost of resolving the fault code.

The P099C fault code refers to the Shift Solenoid ‘G’ Control Circuit High. This code is set by the Transmission Control Module (TCM) when it detects that the Shift Solenoid is not operating within the factory specifications.

The TCM monitors the signal from the Shift Solenoid to ensure smooth shifting of gears in the transmission. When the control circuit for Shift Solenoid ‘G’ is detected to be operating at a higher than normal voltage, the P099C code is triggered.

This fault code indicates a potential issue with the control circuit of the Shift Solenoid ‘G’ and should be addressed promptly to avoid further transmission problems.

What are the possible causes for the automobile fault code P099C?

If you’re seeing the engine light or service engine soon warning light on your dashboard, the fault code P099C might be the culprit. This code is often caused by a faulty shift solenoid ‘G’, an open or shorted shift solenoid ‘G’ harness, or a poor electrical connection in the shift solenoid ‘G’ circuit. To fix this issue, start by visually inspecting the wiring harness and connectors. Look out for any damaged components and check for broken, bent, pushed out, or corroded connector pins. Don’t forget to check the possible causes mentioned above for a comprehensive solution.

How can I visually inspect the wiring harness and connectors related to the Shift Solenoid ‘G’?

To visually inspect the wiring harness and connectors related to the Shift Solenoid ‘G’, start by checking the “Possible Causes” mentioned above. Then, carefully examine 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 any issues and allow for appropriate repairs to be made.

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

When troubleshooting a faulty shift solenoid ‘G’ that is causing the engine light to turn on, it’s important to visually inspect the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. These issues can lead to poor electrical connections and contribute to the problem. By thoroughly examining these areas, you can identify and address any damaged components or corroded connector pins, helping to resolve the issue effectively.

p099c 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 Shift Solenoid ‘G’, an open or shorted Shift Solenoid ‘G’ harness, or a poor electrical connection in the Shift Solenoid ‘G’ 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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