P1128critical severityPowertrain
Throttle Control Motor Lock
on 1997 Lexus SC 300 3.0L I6 · RWD
What this code means
The throttle control motor is locked or unable to move the throttle plate.
Symptoms
- CEL
- Engine stuck at idle
- Limp mode
- No throttle response
Common causes
- Carbon buildup
- Mechanical obstruction
- Faulty motor
- Damaged throttle body
Diagnostic steps
- Inspect throttle plate
- Clean throttle body
- Test motor
- Check for obstructions
Repair notes
Clean or replace throttle body.
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