P1679 Code - Immobilizer Environment Identification Failed
Quick Answer
The P1679 code indicates that the immobilizer system in the vehicle has failed to properly identify the environment in which it is operating. Common causes include Faulty key or key fob, Immobilizer antenna malfunction, ECM malfunction. 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 indicates Immobilizer Environment Identification Failed.
- Common causes
- Common causes include Faulty key or key fob, Immobilizer antenna malfunction, ECM malfunction.
- 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 Description
The P1679 code indicates that the immobilizer system in the vehicle has failed to properly identify the environment in which it is operating. The immobilizer system is designed to prevent unauthorized access to the vehicle by disabling the engine from starting unless the correct key or key fob is used. When this system fails to identify the environment, it can lead to the engine not starting or stalling while driving.
Common Causes of P1679
- Faulty key or key fob
- Immobilizer antenna malfunction
- ECM malfunction
- Wiring issues in the immobilizer system
- Low battery voltage
Symptoms of P1679
- Engine cranks but does not start
- Engine starts but immediately stalls
- Immobilizer light on the dashboard stays illuminated
- Loss of power while driving
How to Fix P1679
- Check the key or key fob for any visible damage and replace if necessary.
- Inspect the immobilizer antenna for any signs of damage or corrosion and replace if needed.
- Use a diagnostic tool to scan the ECM for any error codes and reset the system if possible.
- Check the wiring in the immobilizer system for any loose connections or damage, repairing or replacing as needed.
- Ensure the vehicle's battery voltage is at the proper level to prevent any electrical issues that could trigger the code.
Cost to Fix P1679
The cost of repairing a P1679 code can vary depending on the specific cause of the issue. In general, the cost of parts for this repair could range from $50 to $200, with labor costs adding an additional $80 to $150 per hour. It's important to note that diagnostic time and labor rates can vary, so it's advisable to check with local auto repair shops for a more accurate estimate based on your location and vehicle make and model.
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Code P1679 Information for Specific Makes
- P1679 Audi — ETS Warning Lamp Open Circuit
- P1679 Buick — Immobilizer Environment Identification Failed
- P1679 Cadillac — Immobilizer Environment Identification Failed
- P1679 Chevrolet — Immobilizer Environment Identification Failed
- P1679 GMC — Immobilizer Environment Identification Failed
- P1679 Honda — RSCD Signal Circuit Malfunction
- P1679 Pontiac — Immobilizer Environment Identification Failed
- P1679 Saturn — Immobilizer Environment Identification Failed
- P1679 Volkswagen — ETS Warning Lamp Open Circuit
Frequently Asked Questions about P1679 Code
1. What are the common symptoms of OBDII code P1679 (Immobilizer Environment Identification Failed)?
The common symptoms of P1679 may include difficulty starting the vehicle, the engine not turning over, or the vehicle not starting at all.
2. What are the possible causes of OBDII code P1679?
Possible causes of P1679 include a faulty immobilizer system, issues with the key fob or key transponder, a malfunctioning Engine Control Module (ECM), or wiring problems.
3. How can I diagnose the OBDII code P1679?
Diagnosing P1679 typically involves using a scan tool to communicate with the vehicle's ECM and checking for any related trouble codes. A thorough inspection of the immobilizer system and key components may also be necessary.
4. Can I still drive my vehicle with OBDII code P1679?
It is not recommended to drive the vehicle with P1679 as the immobilizer system plays a crucial role in preventing unauthorized access to the vehicle. It's best to address the issue promptly.
5. How can I repair OBDII code P1679?
Repairing P1679 may involve reprogramming the key fob, replacing the key transponder, repairing wiring issues, or recalibrating the immobilizer system. In some cases, professional assistance may be required.
6. Are there any DIY tips for resolving OBDII code P1679?
While some simple troubleshooting steps like checking the key fob battery or ensuring a proper connection may help, resolving P1679 often requires specialized tools and expertise. It's advisable to consult a qualified mechanic.
7. How much does it cost to fix OBDII code P1679?
The cost of fixing P1679 can vary depending on the root cause of the issue, the extent of repairs needed, and labor rates in your area. It's recommended to obtain estimates from local repair shops.
8. Can a low car battery cause OBDII code P1679 to trigger?
A low car battery can sometimes lead to electrical issues that may trigger P1679. It's essential to ensure the car battery is in good condition and properly charged to rule out this possibility.
9. Is OBDII code P1679 a common issue in certain vehicle makes and models?
P1679 can occur in various vehicle makes and models equipped with an immobilizer system. However, its frequency may vary depending on the manufacturer and specific system design.
10. Can resetting the ECM clear OBDII code P1679?
Resetting the ECM may temporarily clear the code, but if the underlying issue causing P1679 is not addressed, the code is likely to reappear. It's crucial to diagnose and fix the root cause of the problem.
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