P1658high severityPowertrain
Wastegate Valve Control Circuit
on 2017 Lexus RC F 5.0L V8 · RWD
What this code means
The ECM detected a fault in the wastegate solenoid circuit on turbo engines.
Symptoms
- CEL
- Boost issues
- Overboost/underboost
- Reduced power
- Turbo surge
Common causes
- Faulty wastegate solenoid
- Damaged wiring
- Stuck wastegate
- Vacuum line disconnected
Diagnostic steps
- Test solenoid resistance
- Check vacuum lines
- Inspect wastegate
- Monitor boost levels
Repair notes
Replace wastegate solenoid.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1