P0028
Intake Valve Control Solenoid Circuit Range/Performance (Bank 2)
The ECU detected that the bank 2 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.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Oil control valve mechanically stuckCommon
- Sludge or debris in oil passagesPossible
- Sensor element aged beyond calibration windowLess likely
Parts involved
- Oil Control Valve
- Camshaft Position Actuator
- Engine Oil
P0028 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.