[SOLVED] P279A Code: Fixing Four Wheel Drive High Range Performance Issues

The P279A automobile fault code is a common issue that triggers the Engine Light ON or Service Engine Soon Warning Light.

The cause of this fault code could be a faulty Engine Control Module, a poor electrical connection in the Engine Control Module circuit, or internal mechanical problems in the transmission. The importance of repairing this issue lies in the fact that it affects the performance of the vehicle.

The difficulty level of repairing this issue is moderate, and it takes approximately 1.0 hour to fix. To interpret the fault code, one needs to check the possible causes listed above and visually inspect the related wiring harness and connectors.

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 p279a fault code. Here are the symptoms to look out for:

  • The P279A fault code in automobiles can cause several symptoms, including the engine light turning on or the service engine soon warning light appearing.
  • Other symptoms may include transmission shifting issues, decreased fuel efficiency, and engine stalling or misfiring.
  • Additionally, the vehicle may experience difficulty starting or accelerating, 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 automobile fault code P279A can be caused by a range of issues, including reprogramming the ECM and faulty engine control modules.

  • The automobile fault code P279A can be caused by several factors.
  • These include the need to reprogram the Engine Control Module (ECM), a faulty Engine Control Module, an open or shorted Engine Control Module harness, poor electrical connection in the Engine Control Module circuit, and internal mechanical problems in the transmission.
  • All of these factors can contribute to the occurrence of the P279A fault code in automobiles.

To fix the automobile fault code p279a, check the possible causes and inspect related components for damage or corrosion.

  • To fix the automobile fault code P279A, first, check the possible causes listed above.
  • Then, visually inspect the related wiring harness and connectors.
  • Look for any 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 P279A has an estimated repair time of 1.0 hour. The cost of fixing this fault code is influenced by the repair time. Most auto repair shops charge between $75 and $150 per hour for their services.

Therefore, the fixing cost of P279A will range between $75 and $150, depending on the repair time required.

The P279A fault code is related to the transfer case in an automobile.

The Engine Control Module (ECM) uses two methods to determine the transfer case range. The first method compares the transmission output speed sensor to the transfer case output speed sensor.

The second method uses a LAN message sent by the transfer case shift control module to the ECM.

If the two methods do not match while in 4WD Low, 4WD High or Neutral, the P279A code is set.

This code indicates a problem with the Four Wheel Drive High Range Performance. No external circuit diagnosis is involved as the internal fault detection is handled inside the control module.

What are the possible causes of the P279A automobile fault code?

If you’re experiencing the P279A fault code, your engine light may be on. This could be due to a variety of causes, including a faulty engine control module, an open or shorted engine control module harness, or transmission internal mechanical problems. To fix the issue, you should visually inspect the related wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

How can one fix the P279A automobile fault code?

If you’re experiencing an illuminated Engine Light or Service Engine Soon Warning Light, it could be due to the P279A fault code. This may be caused by a faulty Engine Control Module, poor electrical connection, or internal mechanical problems with the transmission. To fix this issue, check the possible causes listed above, visually inspect the wiring harness and connectors, and look for any damaged components or corroded pins.

What should be visually inspected when trying to fix the P279A automobile fault code?

If you’re trying to fix the P279A automobile fault code, start by visually inspecting the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector’s pins. Also, check the “Possible Causes” listed above, which include a faulty Engine Control Module, open or shorted Engine Control Module harness, poor electrical connection in the Engine Control Module circuit, or internal mechanical problems in the transmission.

p279a error fault code explained

If your engine light is on, it could be due to a faulty Engine Control Module or a poor electrical connection. Check the wiring harness and connectors for damage, and inspect the ECM.

Reprogramming the ECM may also be necessary.

Scroll to Top