P1656 (blink 74) on Toyota Passo (KGC10): Oil Control Valve Control System Malfunction
Short answer: P1656 means “Oil Control Valve Control System 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: is the control signal of the oil control valve outputted normally from the EFI ECU?.
- Code
- P1656 · blink 74
- 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
- When, under a condition where the battery voltage is 12V or more, one of the following conditions is continued over a certain length of time
What to check, in order
- Is the control signal of the oil control valve outputted normally from the EFI ECU?
- Is the harness between the oil control valve and the EFI ECU normal?
Related on this car
Same code on other cars
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.