P1126 Possible Causes
- Throttle actuator control motor relay
- Throttle actuator control motor relay circuit open or shorted
- Poor electrical connection in throttle actuator control motor relay circuit
How to Fix Code P1126?
Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
Check engine light illuminated (or service engine soon warning light)
P1126 Meaning
The throttle actuator control motor power is supplied to the engine control module (ECM) through the throttle actuator control motor relay. The throttle actuator control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends an ON signal to the throttle actuator control motor relay and battery voltage is supplied to the ECM. When the ignition switch is OFF, the ECM sends an OFF signal to the throttle actuator control motor relay and battery voltage is not supplied to the ECM.