P1238 INFINITI Possible Causes
- Faulty electronic throttle control actuator
- Throttle plate sticking due to carbon buildup
- Electronic throttle control actuator wiring harness is open or short-circuited
- Poor electrical circuit connection of the electronic throttle control actuator
How is P1238 INFINITI Code Repaired?
Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
When is the Code Detected?
The P2119 code is detected when the electronic throttle control actuator does not function properly due to a malfunction of the return spring or when the engine control module (ECM) detects that the throttle valve is stuck in the open position.
Possible Symptoms
- Check engine light on (or service engine soon warning light)
- No response from the accelerator pedal
P1238 INFINITI Meaning
The electronic throttle control actuator consists of a throttle control motor, throttle position sensor, etc. The throttle control motor is operated by the engine control module (ECM) and it opens and closes the throttle valve.
The throttle position sensor detects the position of the throttle valve and sends the voltage signal to the ECM. The ECM evaluates the current throttle opening angle and controls the throttle opening angle in response to driving conditions via the throttle control motor.