P1128
Throttle Control Motor Lock
2003-2008 Toyota Matrix 1.8L I4
Critical SeverityPowertrain
Description
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
- P0070Ambient Air Temperature Sensor Circuit
- P0071Ambient Air Temperature Sensor Range/Performance
- P0072Ambient Air Temperature Sensor Circuit Low
- P0073Ambient Air Temperature Sensor Circuit High
- P0115Engine Coolant Temperature (ECT) Sensor 1 Circuit
- P0116ECT Sensor 1 Circuit Range/Performance
- P0117ECT Sensor 1 Circuit Low Input
- P0118ECT Sensor 1 Circuit High Input
- P0119ECT Sensor 1 Circuit Intermittent
- P0125Insufficient Coolant Temperature for Closed Loop Fuel Control
P1128 on Other Vehicles
Common Questions
What does code P1128 mean on a 2003-2008 Toyota Matrix?
P1128 stands for "Throttle Control Motor Lock". The throttle control motor is locked or unable to move the throttle plate.
What are the symptoms of P1128 on a Toyota Matrix?
Common symptoms of P1128 include: CEL, Engine stuck at idle, Limp mode, No throttle response.
What causes P1128 on a 2003-2008 Toyota Matrix?
Common causes of P1128 include: Carbon buildup, Mechanical obstruction, Faulty motor, Damaged throttle body.