P1662
Turbocharger Wastegate Regulating Valve Open Circuit / Short To Ground
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$28–89 (est.)
Symptoms
- Reduced engine power
- Reduced throttle response
- Check Engine Light Is On
- Unstable engine operation under load
- Turbine noise may change
Causes
- Valve control circuit open
- Short circuit to ground
- Solenoid valve malfunction
- Wiring harness damage
- Poor contact in connectors
How to Fix
- Check valve control circuit integrity
- Check valve resistance (usually 10-30 ohms)
- Inspect connectors and wiring for damage
- If necessary, replace the control valve
- Check the operation of the turbine after repair