What does code P1127 mean on Toyota vehicles?
The electronic throttle control system (ETCS) actuator power supply circuit is faulty.
OBD-II Code Toyota
P1127 — Toyota — ETCS Actuator Power Source Circuit
The electronic throttle control system (ETCS) actuator power supply circuit is faulty.
Common symptoms
- Limp mode
- reduced throttle response
Possible causes
- Power supply issue
- relay or wiring fault
Initial recommendation
Check ETCS power supply, fuses and relays.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
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