P1140
Intake Valve Timing Control Performance Bank 1
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)
Symptoms
- Check Engine light comes on
- Deterioration in acceleration dynamics
- Increased fuel consumption
- Unstable idling
- Possible misfires
Causes
- Low or contaminated engine oil level
- VVT solenoid malfunction
- Contamination or wear of the phase change mechanism
- Problems with the camshaft position sensor
- Open or short circuit in control circuit
How to Fix
- Check the level and condition of the engine oil
- Diagnose VVT solenoid operation
- Check the phase change mechanism for contamination or wear
- Test the camshaft position sensor
- Check the integrity of electrical circuits