P0026 — Intake Valve Control Solenoid Circuit Range/Performance (Bank 1)
The ECU detected that the bank 1 intake valve oil control solenoid does not respond as expected. Common causes are sludge in the oil passages, a sticking solenoid, or low oil pressure that prevents proper VVT phasing on the intake side.
General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.
Affected components
- Oil control valve
- Camshaft position actuator
- Engine oil
Possible causes to check
These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.
- Oil control valve mechanically stuck
- Sludge or debris in oil passages
- Low oil pressure or wrong oil viscosity
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Related codes
Sources
Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.