P1691Immobilizer antenna coil open or shorted
- Hyundai/Kia code · Engine
- How the car detects it
- The immobilizer (SMARTRA) checks the chip in the key before the engine computer allows a start. The antenna coil around the ignition lock, which reads the key chip, has an open or short circuit. Applies to cars with an immobilizer.
- What you may notice
- No start
- Likely causes
- LikelyAntenna coil
- PossibleWiring or connector to the SMARTRA unit
- Sources
- manuals.autorepairshq.com › General Information
- blog.upfix.com › hyundai-factory-dtc-code-definitions
Backed by at least two independent sources.
From Obdaryn's Hyundai/Kia pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.