P1601 · blink 81 – Immobilizer Signal Malfunction
- System
- Engine control (EFI)
- Dashboard light
- Check engine light (MIL)
- Check-engine blink code
- 81
- Applies to
- 1KR-FE: M300 (Sirion export = JDM Boon M300S/M301S(4WD? see gaps) & Passo KGC10/KGC15). JDM-spec ECU not separately documented | K3-VE: M301 (Sirion 1.3 = JDM Boon M310S? / Passo QNC10)
- Description
- Immobilizer Signal Malfunction
- Detection / symptoms
- Detection: 1.When the engine starts, the rolling codes are not matched.
- Possible causes
- Trouble area: 1.Open wire or short circuit for the immobilizer system circuit 2.Immobilizer ECU 3.EFI ECU
- What to check
- Checking points:
- Confidence
- high (factory manual, export spec)
From the factory service material. Clear the code and test-drive to confirm it returns. Search all fault codes · Common problems · Warning lights