P1802 Code - Immobilizer Antenna Error
Quick Answer
The P1802 diagnostic trouble code refers to an error with the immobilizer antenna in the vehicle. Common causes include Faulty immobilizer antenna, Wiring or connection issues with the antenna, Immobilizer control unit 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
- P1802 indicates Immobilizer Antenna Error.
- Common causes
- Common causes include Faulty immobilizer antenna, Wiring or connection issues with the antenna, Immobilizer control unit 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 P1802 Description
The P1802 diagnostic trouble code refers to an error with the immobilizer antenna in the vehicle. The immobilizer system is designed to prevent unauthorized access to the vehicle by disabling the engine starting system. The antenna plays a crucial role in communicating with the vehicle's transponder key to allow the engine to start. When this code is triggered, it indicates a fault in the immobilizer antenna, which can lead to starting issues and potential security concerns.
Common Causes of P1802
- Faulty immobilizer antenna
- Wiring or connection issues with the antenna
- Immobilizer control unit malfunction
- Transponder key issues
- Faulty ignition switch
Symptoms of P1802
- Engine cranks but does not start
- Engine starts and then stalls immediately
- Security light flashing on the dashboard
- Inability to start the vehicle at all
How to Fix P1802
- Check the wiring and connections of the immobilizer antenna for any loose or damaged components.
- Test the antenna and replace if necessary.
- Check the immobilizer control unit for any faults and replace if needed.
- Verify the functionality of the transponder key and replace if it is not communicating properly with the antenna.
- Ensure the ignition switch is working correctly and replace if there are any faults.
Cost to Fix P1802
The typical repair costs for an immobilizer antenna error can range from $150 to $500, including parts and labor. It's important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's recommended to check with local shops for a more accurate estimate.
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Code P1802 Information for Specific Makes
- P1802 Hyundai — Immobilizer Antenna Error
- P1802 KIA — Immobilizer Antenna Error
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