What does code P1129 mean on Toyota vehicles?
The ECU detects a general malfunction in the electronic throttle control system (ETCS).
OBD-II Code Toyota
P1129 — Toyota — Electric Throttle Control System
The ECU detects a general malfunction in the electronic throttle control system (ETCS).
Common symptoms
- Limp mode
- poor throttle response
Possible causes
- ETCS component failure
- sensor or actuator issue
Initial recommendation
Run full ETCS diagnostics and inspect related components.
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
Use the app to combine Toyota code P1129 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more brands