Engine-Codes - Infiniti - P1121 2004 INFINITI G35

P1121 2004 INFINITI G35 - Electric Throttle Control Actuator

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

P1121 2004 INFINITI G35 Possible Causes

  • Faulty Electric Throttle Control Actuator
  • Electric Throttle Control Actuator harness is open or shorted
  • Electric Throttle Control Actuator circuit poor electrical connection

How is the P1121 2004 INFINITI G35 code repair?

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's pins.

What is the cost to diagnose the P1121 2004 INFINITI G35 code

Labor: 1.0

The cost to diagnose the P1121 2004 INFINITI G35 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

When is the code detected?

Electric throttle control actuator does not function properly due to the return spring malfunction or throttle valve is stuck open

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • No throttle pedal response

P1121 2004 INFINITI G35 Meaning

Electric Throttle Control Actuator consists of throttle control motor, Throttle Position Sensor (TPS), 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 the opening and closing speed of the throttle valve and feeds the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

More Information

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