[SOLVED] P1579 Code: Power Reduction Mode Active – Fixing P/N To D/R Issue

The automobile fault code P1579 indicates a problem with the Throttle Control Body. When this fault code is triggered, the Engine Light or Service Engine Soon Warning Light will turn on. The possible causes of this issue include a faulty Throttle Control Body, an open or shorted Throttle Control Body harness, or a poor electrical connection in the Throttle Control Body circuit.

To fix this problem, you should visually inspect the wiring harness and connectors for any damage. Additionally, check 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 ensure proper functioning of the throttle control 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 p1579 fault code.

  • The symptoms of the automobile fault code p1579 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p1579 can be caused by a faulty Throttle Control Body, an open or shorted Throttle Control Body harness, or a poor electrical connection in the Throttle Control Body circuit.

  • The fault code P1579 can be caused by a faulty Throttle Control Body, an open or shorted Throttle Control Body harness, or a poor electrical connection in the Throttle Control Body circuit.

To fix the p1579 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p1579, 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 factors influencing the diagnosis and fixing cost of the automobile fault code p1579 are the estimated repair time and the hourly rate charged by auto repair shops. The estimated repair time for this fault code is 1.0 hour. Auto repair shops typically charge between $75 and $150 per hour for their services.

These factors play a significant role in determining the overall cost of diagnosing and fixing the p1579 fault code.

The P1579 fault code is triggered by the Powertrain Control Module (PCM) when it detects a specific set of conditions.

These conditions include the gear selection being changed from Park or Neutral to Drive or Reverse, the vehicle speed sensor (VSS) input being less than 6 mph, the engine speed being more than 2000 rpm, and the throttle angle being at 20 degrees or more. When these conditions are met, the PCM determines that it should retard spark timing and disable fuel to individual cylinders. This is done in order to reduce the engine power and prevent any potential damage or issues that may arise from the high throttle angle.

In summary, the P1579 fault code indicates that the PCM has activated the power reduction mode due to the specific conditions mentioned. This is a safety measure to protect the engine and ensure optimal performance.

What are the possible causes of the automobile fault code P1579?

If you see the engine light or service engine soon warning light on, the fault code P1579 could be the culprit. This code is often caused by a faulty throttle control body, an open or shorted throttle control body harness, or a poor electrical connection in the throttle control body circuit. To fix this issue, visually inspect the wiring harness and connectors, checking for any damage or corrosion. Additionally, look out for broken, bent, pushed out, or corroded connector pins.

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, which include a faulty Throttle Control Body, an open or shorted Throttle Control Body harness, or a poor electrical connection in the Throttle Control Body circuit. To visually inspect the problem, examine the wiring harness and connectors for any signs of damage. Look out for broken, bent, pushed out, or corroded pins in 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 throttle control body, an open or shorted throttle control body harness, or a poor electrical connection in the throttle control body 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 connector pins.

p1579 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 Throttle Control Body or issues with the wiring harness and connectors. To fix it, visually inspect the wiring harness and connectors for any damage or corrosion. Check for broken or bent pins as well.

Scroll to Top