Engine and gearbox (P)
P0026: Intake Valve Control Solenoid Issue
This code indicates a problem with the intake valve control solenoid circuit on bank 1. It affects the variable valve timing (VVT) system, which can impact engine performance.
Checked by a licensed car technician · last reviewed 29 September 2026
Symptoms
- Check engine light on
- Rough idle
- Reduced engine performance
- Poor fuel economy
Common causes
- Oil control valve mechanically stuck
- Sludge or debris in oil passages
- Low oil pressure
- Wrong oil viscosity
How to check it yourself
- Check engine oil level and condition
- Inspect for sludge or debris in oil passages
- Test oil pressure
- Inspect and clean the oil control valve
Can I keep driving?
The car can be driven, but performance may be reduced. Address the issue soon to avoid further damage.
General guidance, not a professional inspection. Confirm faults with measurements before buying parts, and use a qualified mechanic for brakes, steering, fuel leaks, airbags, and other safety-critical work. Terms and disclaimer