P1690No answer from the immobilizer unit
- 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 engine computer gets no response from the SMARTRA immobilizer unit. On i30 FD, a corroded immobilizer connector in the A-pillar is a known cause. Applies to cars with an immobilizer.
- What you may notice
- Cranks but won't start, often intermittently
- Likely causes
- PossibleSMARTRA unit
- PossibleCorroded connector or wiring
- RareAntenna coil circuit
- Sources
- manuals.autorepairshq.com › General Information
- youcanic.com › hyundai-fault-code-dtc
- iaaf.co.uk › tecrmi-what-the-fix-hyundai-i30
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.