AutoCodes – Hyundai – P1802 Hyundai

P1802 Hyundai Code - Immobilizer Antenna Error

Quick Answer

P1802 Hyundai indicates Immobilizer Antenna Error. Common causes include Faulty Immobilizer Antenna, Immobilizer Antenna harness is open or shorted, Immobilizer Antenna circuit poor electrical connection. 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 Hyundai indicates Immobilizer Antenna Error.
Common causes: Common causes include Faulty Immobilizer Antenna, Immobilizer Antenna harness is open or shorted, Immobilizer Antenna circuit poor electrical connection.
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 Popularity 6,191

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 20, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1802 Hyundai Description

OBDII Code P1802 Hyundai - Immobilizer Antenna Error - AutoCodes.com — P1802 Hyundai Code - Immobilizer Antenna Error

What does this mean?

What are the Possible Causes of the DTC P1802 Hyundai?

Faulty Immobilizer Antenna
Immobilizer Antenna harness is open or shorted
Immobilizer Antenna circuit poor electrical connection

How to Fix the DTC P1802 Hyundai?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1802 Hyundai code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1802 Hyundai code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1802 Hyundai Code

1. What are the common symptoms of OBDII code P1802 Hyundai (Immobilizer Antenna Error)?

The common symptoms include the vehicle not starting, the engine stalling, and the immobilizer light staying on.

2. What are some possible causes of the P1802 Hyundai code?

Possible causes of the P1802 code include a faulty immobilizer antenna, issues with the immobilizer system, damaged wiring, or a problem with the key fob.

3. How can I diagnose the Immobilizer Antenna Error in a Hyundai?

Diagnosing the issue involves checking the immobilizer antenna for damage, inspecting the wiring for any faults, and using a diagnostic tool to read the specific error codes.

4. Can I repair the Immobilizer Antenna Error myself?

While some DIY enthusiasts may attempt to fix the issue by checking and repairing wiring connections or replacing the antenna, it is recommended to consult a professional technician for a thorough diagnosis and repair.

5. Is it safe to continue driving with the P1802 code present?

It is not recommended to drive the vehicle with the P1802 code, as it can lead to potential issues with starting the engine or the vehicle stalling unexpectedly.

6. How much does it typically cost to repair the Immobilizer Antenna Error in a Hyundai?

The cost of repairing the P1802 code can vary depending on the extent of the issue and the specific repairs needed, but it may range from a few hundred to a thousand dollars.

7. Can the P1802 code be triggered by a dead battery in the key fob?

Yes, a dead battery in the key fob can sometimes trigger the Immobilizer Antenna Error, as the vehicle may have difficulty communicating with the immobilizer system.

8. Will resetting the ECU clear the P1802 Hyundai code?

Resetting the ECU may temporarily clear the code, but if the underlying issue causing the Immobilizer Antenna Error is not addressed, the code is likely to reappear.

9. How long does it typically take to repair the Immobilizer Antenna Error in a Hyundai?

The repair time can vary depending on the complexity of the issue and the availability of parts, but it may take a few hours to a day to diagnose and fix the problem.

10. Can a locksmith help with fixing the P1802 code related to the immobilizer system?

Locksmiths with experience in automotive security systems may be able to diagnose and repair issues related to the immobilizer system causing the P1802 code.