P1802
Immobilizer Antenna Error
P1802 is an OBD-II diagnostic trouble code meaning: Immobilizer Antenna Error. Common causes: open or short circuit in the immobilizer antenna circuit, damage to the immobilizer antenna. Estimated repair cost: $33–167.
Symptoms
- Engine won't start
- The immobilizer indicator is flashing
- The key is not recognized by the system
- Lost memory of radio stations and other settings
- Difficulty starting the engine
Causes
- Open or short circuit in the immobilizer antenna circuit
- Damage to the immobilizer antenna
- Malfunction of the immobilizer control unit
- Wiring Harness Problems
- Ignition switch malfunction
How to Fix
- Check the integrity of the immobilizer antenna
- Check the connection and condition of the connectors
- Diagnose the antenna circuit for an open or short circuit
- Check the operation of the immobilizer control unit
- If necessary, replace the immobilizer antenna
- Repair only from an authorized dealer
Related codes
FAQ
What does the P1802 code mean?
P1802 is an OBD-II diagnostic trouble code that indicates: Immobilizer Antenna Error
What causes a P1802 error code?
The most common causes of P1802 include: Open or short circuit in the immobilizer antenna circuit; Damage to the immobilizer antenna; Malfunction of the immobilizer control unit; Wiring Harness Problems.
How do I fix a P1802 diagnostic trouble code?
To fix P1802: Check the integrity of the immobilizer antenna. Check the connection and condition of the connectors. Diagnose the antenna circuit for an open or short circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1802?
Yes, but get it checked soon
How much does it cost to fix P1802?
The estimated repair cost for P1802 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat