P1679 Cadillac Code - Immobilizer Environment Identification Failed
Quick Answer
The P1679 Cadillac diagnostic trouble code indicates that there has been a failure in the immobilizer environment identification system. Common causes include Faulty key or key fob, Malfunctioning immobilizer module, Wiring issues in the immobilizer system. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1679 Cadillac indicates Immobilizer Environment Identification Failed.
- Common causes
- Common causes include Faulty key or key fob, Malfunctioning immobilizer module, Wiring issues in the immobilizer system.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1679 Cadillac Description
The P1679 Cadillac diagnostic trouble code indicates that there has been a failure in the immobilizer environment identification system. The immobilizer is a security system that prevents the engine from starting unless the correct key or key fob is used to start the vehicle. When the immobilizer environment identification fails, it means that the system is unable to properly identify the key or key fob being used, leading to a no-start condition.
Common Causes of P1679 Cadillac
- Faulty key or key fob
- Malfunctioning immobilizer module
- Wiring issues in the immobilizer system
- Communication errors between the key or key fob and the vehicle's computer
Symptoms of P1679 Cadillac
- Engine cranks but does not start
- Immobilizer warning light illuminates on the dashboard
- Key or key fob not recognized by the vehicle
- Vehicle goes into anti-theft mode and will not start
How to Fix P1679 Cadillac
- Check the key or key fob for any damage or malfunctions. Replace if necessary.
- Inspect the immobilizer module for any faults or malfunctions. Replace if needed.
- Check the wiring in the immobilizer system for any damage or loose connections. Repair as necessary.
- Perform a diagnostic scan to identify any communication errors between the key or key fob and the vehicle's computer. Reset or reprogram the system as needed.
- Test the vehicle to ensure the immobilizer system is functioning properly and the engine starts without issue.
Cost to Fix P1679 Cadillac
The cost of repairing a P1679 Cadillac code can vary depending on the specific cause of the issue. On average, the repair cost for this type of issue can range from $200 to $500, including parts and labor. However, it's important to note that diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's recommended to check with local auto repair shops for a more accurate estimate.
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