The P1EC9 automobile fault code indicates a problem with the AC Compressor Motor. The most common symptom is the Engine Light turning on.

The cause of this issue could be a faulty AC Compressor Motor, an open or shorted AC Compressor Motor harness, or a poor electrical connection in the AC Compressor Motor circuit.

The importance of repairing this issue lies in the fact that it affects the proper functioning of the AC system. The repair difficulty is moderate, and it takes around 1.0 hour to fix.

To fix the issue, one should visually inspect the wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

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

If you notice the Engine Light ON or Service Engine Soon Warning Light, it could be a sign of p1ec9 fault code. Here are the symptoms to look out for:

  • The P1EC9 fault code in an automobile can cause several symptoms, including the engine light turning on or the service engine soon warning light appearing.
  • Other symptoms may include reduced engine power, decreased fuel efficiency, rough idling, stalling, and difficulty starting the engine.
  • Additionally, the vehicle may experience transmission shifting issues, and there may be a noticeable decrease in overall performance.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle and ensure safe driving conditions.

The P1EC9 fault code can be caused by a faulty AC compressor motor, open or shorted harness, or poor electrical connection.

  • The automobile fault code P1EC9 can be caused by a faulty A/C compressor motor.
  • It can also be caused by an open or shorted A/C compressor motor harness.
  • Additionally, a poor electrical connection in the A/C compressor motor circuit can also trigger this fault code.

Below are the possible fixes for the automobile fault code p1ec9, including inspecting wiring harness and connectors for damage or corrosion.

  • To fix the automobile fault code p1ec9, first, check the possible causes listed above.
  • Then, visually inspect the related wiring harness and connectors.
  • Look for damaged components and check for broken, bent, pushed out, or corroded connector’s pins.
  • This fix will take an estimated repair time of 1.0 hour.

The automobile fault code P1EC9 can be diagnosed and fixed within an estimated repair time of 1.0 hour. The cost of repair is influenced by the repair time, which is commonly charged between $75 and $150 per hour by most auto repair shops.

Therefore, the total cost of diagnosis and fixing the P1EC9 fault code will depend on the hourly rate charged by the repair shop and the estimated repair time required to fix the issue.

The P1EC9 fault code is related to the AC compressor motor. It indicates that the motor is drawing too much current at a given moment. The AC compressor is responsible for providing refrigerant flow in the AC refrigerant loop to cool down the cabin and maintain battery temperature.

The AC compressor uses a 3-phase alternating current, high voltage electric motor to operate. The HybridEV Powertrain Control Module 2 uses various sensors to determine the speed at which the compressor will operate.

The speed request message is sent from the HybridEV Powertrain Control Module 2 to the AC compressor control module via GM LAN message.

What are the possible causes of the P1EC9 automobile fault code?

If you see the engine light on or the service engine soon warning light, it could be due to the P1EC9 fault code. This code is usually caused by a faulty A/C compressor motor, an open or shorted A/C compressor motor harness, or a poor electrical connection in the A/C compressor motor circuit. To fix this issue, you should visually inspect the wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

How can I visually inspect the related wiring harness and connectors to fix the P1EC9 fault code?

If you’re experiencing an Engine Light ON or Service Engine Soon Warning Light due to a P1EC9 fault code, you may need to visually inspect the related wiring harness and connectors. This fault code can be caused by a faulty A/C Compressor Motor, an open or shorted A/C Compressor Motor harness, or a poor electrical connection in the A/C Compressor Motor circuit. To fix the issue, check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

What are the signs of damaged components that I should look for when fixing the P1EC9 fault code?

If you’re dealing with a P1EC9 fault code, keep an eye out for the engine light turning on or the service engine soon warning light. These could be signs of a faulty A/C compressor motor, an open or shorted A/C compressor motor harness, or a poor electrical connection in the A/C compressor motor circuit. To fix the issue, visually inspect the wiring harness and connectors, and check for damaged components or broken, bent, pushed out, or corroded connector pins.

p1ec9 error fault code explained

If your engine light is on, it could be due to a faulty AC compressor motor, an open or shorted harness, or poor electrical connection. Visually inspect the wiring harness and connectors for damage and check for broken, bent, pushed out, or corroded pins.

Scroll to Top