P1600 (blink 83) on Toyota Passo (KGC10): Immobilizer Signal Circuit Malfunction

Short answer: P1600 means “Immobilizer Signal Circuit Malfunction”. The car’s computer has found a fault in the Engine control (EFI) system and turns on the Check engine light (MIL). First check: EFI ECU.

Code

P1600 · blink 83

System

Engine control (EFI)

Dashboard light

Check engine light (MIL)

Also sold as

Daihatsu Boon, Daihatsu Sirion (M300)

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)

Confidence

high (factory manual, export spec)

Source

carmanualsclub.com

Symptoms and when it is set

1. When the engine starts, the rolling code can not reading out or writing to the EFI ECU.

Likely causes

1. EFI ECU

Related on this car

• All fault codes for this car
• Warning lights
• Where the parts are (parts map)
• Common problems

Same code on other cars

• P1600 · Toyota Vitz (1st gen)
• P1600 on all cars compared

← P1510/54 P1601/81 →

Clearing the code does not fix the fault. If it comes back, the problem is still there. For brakes, airbags and steering, see a trained mechanic.