Code result
P0028
Intake Valve Control Solenoid Circuit Range/Performance
Moderate severity
What it means
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.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Oil control valve mechanically stuck
highOne of the most commonly reported causes for this code — check this first.
Sludge or debris in oil passages
mediumA plausible cause — test and verify before replacing parts.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose P0028 freeNo credit card required