P1125high severityPowertrain
Throttle Control Motor Circuit
on 2001 Lexus LS 430 4.3L V8 · RWD
What this code means
The ECM detected a malfunction in the ETCS throttle control motor circuit.
Symptoms
- CEL
- Reduced power
- Poor throttle response
- Limp mode
Common causes
- Faulty throttle motor
- Damaged wiring
- Corroded connector
- Faulty throttle body
Diagnostic steps
- Test motor resistance
- Inspect wiring
- Check connector
- Command motor with scan tool
Repair notes
Replace throttle body assembly.
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