[SOLVED] P0659 Code: Actuator Supply Voltage ‘a’ Circuit High – How To Fix It!

The automobile fault code P0659 indicates a problem with the transmission solenoids or the powertrain control module (PCM). The most common symptom is the engine light being illuminated.

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 on the connectors.

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

It is important to address this issue 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 p0659 fault code.

  • The symptoms of the automobile fault code P0659 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p0659 can be caused by faulty transmission solenoids, open or shorted harness, poor electrical connection in the solenoid circuit, or a faulty powertrain control module (PCM).

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  • The fault code P0659 can be caused by: faulty transmission solenoids, an open or shorted transmission solenoids harness, a poor electrical connection in the transmission solenoids circuit, or a faulty powertrain control module (PCM).

To fix the p0659 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code P0659, 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 if there are any broken, bent, pushed out, or corroded pins in the connectors.
  • This fix typically takes around 1.0 hour to complete.

The factors influencing the diagnosis and fixing cost of the automobile fault code p0659 are the estimated repair time of 1.0 hour and the typical auto repair shop charges between $75 and $150 per hour.

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The P0659 fault code refers to the Actuator Supply Voltage ‘A’ Circuit being too high. This code is set by the Powertrain Control Module (PCM) when it detects that the voltage returning from the transmission solenoid circuits is not at the correct level.

The PCM monitors these circuits by supplying voltage to the solenoids and then checking for the voltage returning through each solenoid control wire. If the voltage is too high, the PCM will set the P0659 code. This code indicates a problem with the actuator supply voltage, which can affect the performance of the transmission solenoids.

What are the possible causes of the automobile fault code P0659?

If you see the engine light or service engine soon warning light on, the fault code P0659 could be the culprit. This code is often caused by faulty transmission solenoids, an open or shorted transmission solenoids harness, a poor electrical connection in the transmission solenoids circuit, or a faulty powertrain control module (PCM). To fix this issue, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.

How can I visually inspect the wiring harness and connectors to fix the P0659 fault code?

If you’re dealing with the P0659 fault code and your engine light is on, it’s time to take action. The possible causes include faulty transmission solenoids, an open or shorted transmission solenoids harness, a poor electrical connection in the transmission solenoids circuit, or a faulty powertrain control module (PCM). To fix this issue, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded pins in the connectors. Don’t delay, get to the bottom of this problem and get your engine running smoothly again.

What should I look for when checking for damaged components and connector pins to resolve the P0659 fault code?

To resolve the P0659 fault code, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. This can help identify any issues with the Transmission Solenoids harness, poor electrical connections, or a faulty Powertrain Control Module (PCM). Don’t forget to check the “Possible Causes” listed above for further troubleshooting.

p0659 error fault code explained

If your engine light is on and you’re dealing with a P0659 fault code, it could be due to faulty transmission solenoids, an open or shorted transmission solenoid harness, a poor electrical connection in the transmission solenoid circuit, or a faulty powertrain control module (PCM). To fix this issue, 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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