P1321
Cylinder 1 Oil Supply Solenoid Valve Switch ON Time Immeasurable
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)
Symptoms
- Unstable engine operation
- Increased fuel consumption
- Reduced engine power
- Check Engine light comes on
- Problems with the VVT system
Causes
- Oil supply solenoid malfunction
- Open or short circuit in wiring
- Poor contact in solenoid connector
- Engine control unit (ECU) malfunction
- Low oil level or poor quality
How to Fix
- Check the oil level and condition
- Check the integrity of the solenoid wiring and connectors
- Check solenoid resistance
- Replace solenoid if necessary
- Check the operation of the VVT system