P1233 INFINITI Possible Causes
- Faulty Electronic Throttle Control (ETC) actuator
- Electronic Throttle Control (ETC) actuator harness is open or shorted
- Poor electrical connection in the Electronic Throttle Control (ETC) actuator circuit
How to Fix Code P1233 INFINITI?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
When is the Code Detected?
The electronic throttle control function is not operating properly.
Possible Symptoms
- Engine light on (or engine warning light soon)
P1233 INFINITI Meaning
The electronic throttle control actuator consists of a throttle control motor, throttle position sensor, etc. The throttle position (TP) sensor responds to throttle valve movement.
The throttle position sensor has two sensors. These sensors are a type of potentiometer that convert the throttle valve position into an output voltage and send the voltage signal to the Engine Control Module (ECM). Additionally, these sensors detect the opening and closing speed of the throttle valve and transmit voltage signals to the ECM. The ECM determines the current throttle valve opening angle from these signals, and the ECM controls the throttle control motor to properly adjust the throttle valve opening angle in response to driving conditions.