The automobile fault code P1679 can be a cause for concern when the engine light or service engine soon warning light comes on.

This code is often accompanied by a no or hard engine start situation. The possible causes for this fault code include a deterrent key not programmed to the vehicle, a faulty deterrent key, a faulty ignition switch, or poor electrical connections for deterrent circuit components.

To fix this issue, it is recommended to visually inspect the related wiring harness and connectors, checking for damaged components and looking for broken, bent, pushed out, or corroded connector pins. The repair time for this issue is estimated to be around 1.0. It is important to address this fault code promptly to ensure proper functioning of the vehicle.

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

If you’re experiencing an illuminated engine light and difficulty starting your engine, you may be dealing with the p1679 fault code.

  • The symptoms of the automobile fault code p1679 include the Engine Light being ON (or Service Engine Soon Warning Light) and experiencing a no or hard engine start situation.

The fault code P1679 can be caused by a deterrent key not programmed, faulty deterrent key, faulty ignition switch, or poor electrical connections.

  • The fault code P1679 can be caused by the following: deterrent key not programmed to the vehicle, faulty deterrent key, faulty ignition switch, poor electrical connection for deterrent circuit components.

To fix the automobile fault code p1679, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code P1679, 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.
  • The estimated repair time for this fix is 1.0 hour.

The factors influencing the diagnosis and fixing cost of the automobile fault code p1679 are the estimated repair time of 1.0 hour and the typical auto repair shop charges between $75 and $150 per hour.

The P1679 fault code refers to an Immobilizer Environment Identification Fail in the vehicle’s theft deterrent system. This system includes the Engine Control Module (ECM), Powertrain Interface Module (PIM), and Body Control Module (BCM).

When you turn on the ignition or unlock the door with the remote key, the BCM and key exchange security data to verify the correct key is being used.

Once the correct key is confirmed and the ignition is turned on, the PIM and BCM exchange data to confirm the correct BCM and PIM are being used.

After confirming the correct key, BCM, and PIM, the PIM and ECM exchange data to allow the vehicle to start.

These data exchange processes use encrypted data exchanges between each of the devices. If the P1679 fault code appears, it means there has been a failure in the identification of the immobilizer environment. This could be due to a problem with the key, BCM, PIM, or ECM.

It is important to have this issue diagnosed and repaired by a qualified technician to ensure the security and proper functioning of the vehicle.

What are the possible causes for the automobile fault code P1679, which results in the engine light being on and a no or hard engine start situation?

If you’re experiencing the P1679 fault code, which triggers the engine light and makes it difficult or impossible to start your car, there are a few potential causes to consider. It could be that the deterrent key hasn’t been properly programmed to your vehicle, or the key itself may be faulty. Another possibility is a faulty ignition switch or poor electrical connections for the deterrent circuit components. To fix the issue, start by visually inspecting the wiring harness and connectors, checking for any damage or corrosion. Additionally, examine the components for any signs of breakage, bending, or pushed out pins on the connectors.

How can I determine if the deterrent key is not programmed to the vehicle or if it is faulty, causing the P1679 fault code?

If you’re experiencing an engine light or service engine soon warning light, along with a no or hard engine start situation, it could be due to a P1679 fault code. This can be caused by a deterrent key that is not programmed to the vehicle, a faulty deterrent key, a faulty ignition switch, or poor electrical connection for deterrent circuit components. To determine the exact cause, visually inspect the related wiring harness and connectors, checking for any damaged components or broken, bent, pushed out, or corroded connector pins.

What steps should I take to fix the P1679 fault code, including visually inspecting the wiring harness and connectors, checking for damaged components, and examining the condition of the connector’s pins?

To fix the P1679 fault code, start by checking the possible causes: a deterrent key not programmed to the vehicle, a faulty deterrent key, a faulty ignition switch, or poor electrical connection for deterrent circuit components. Then, visually inspect the wiring harness and connectors, looking for any damage. Additionally, examine the condition of the connector’s pins, making sure they are not broken, bent, pushed out, or corroded.

p1679 error fault code explained

If you’re experiencing a no or hard engine start situation and your engine light is on, it could be due to a few possible causes. The deterrent key may not be programmed to your vehicle, or you could have a faulty deterrent key or ignition switch. Another possibility is a poor electrical connection for deterrent circuit components.

To fix this issue, visually inspect the wiring harness and connectors, checking for any damage or corrosion. Look out for broken, bent, pushed out, or corroded connector pins.

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