P2103critical severityPowertrain
Throttle Actuator Control Motor Circuit High
on 1999 Lexus SC 300 3.0L I6 · RWD
What this code means
High voltage on the throttle motor circuit indicates a short to power or open ground.
Symptoms
- Limp mode
- Check engine light
- Throttle stuck partially open
Common causes
- Short to voltage
- Open ground circuit
- Failed motor
- ECM driver issue
Diagnostic steps
- Check for voltage at motor with key off
- Test ground circuit continuity
- Inspect wiring
Repair notes
Repair wiring fault or replace throttle body assembly.
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