P1238 NISSAN Possible Causes
- Faulty electronic throttle control actuator
- Throttle plate sticking due to carbon buildup
- Electronic throttle control actuator harness is open or shorted
- Poor electrical connection in the electronic throttle control actuator circuit
How is the P1238 NISSAN 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 operate properly due to a malfunctioning return spring or when the engine control module (ECM) detects that the throttle valve is stuck in the open position.
Possible Symptoms
- Engine light on (or service engine soon warning light)
- No response from accelerator pedal
P1238 NISSAN 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 throttle valve position 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.