AutoCodes – Infiniti – P2101 Infiniti

P2101 Infiniti Code - Electric Throttle Control Performance

Quick Answer

The throttle actuator is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve. Common causes include Faulty Electric Throttle Control (ETC) Actuator, Electric Throttle Control (ETC) Actuator harness is open or shorted, Electric Throttle Control (ETC) Actuator circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P2101 Infiniti indicates Electric Throttle Control Performance.
Common causes: Common causes include Faulty Electric Throttle Control (ETC) Actuator, Electric Throttle Control (ETC) Actuator harness is open or shorted, Electric Throttle Control (ETC) Actuator circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 26,804

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Feb 28, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2101 Infiniti Description

The throttle actuator is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve. Power supply for the throttle control motor is provided to the ECM via throttle control motor relay. The throttle control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not provided to the ECM. The opening angle of the throttle valve is detected by the throttle position sensor which is mounted on the throttle body. The throttle position sensor provides feedback to the ECM. This feedback allows the ECM to control the throttle actuator and monitor the throttle opening angle in response to driver inputs.

OBDII Code P2101 Infiniti - Electric Throttle Control Performance - AutoCodes.com — P2101 Infiniti Code - Electric Throttle Control Performance

What does this mean?

What are the Possible Causes of the DTC P2101 Infiniti?

Faulty Electric Throttle Control (ETC) Actuator
Electric Throttle Control (ETC) Actuator harness is open or shorted
Electric Throttle Control (ETC) Actuator circuit poor electrical connection

How to Fix the DTC P2101 Infiniti?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2101 Infiniti code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2101 Infiniti Code

1. What does the OBDII code P2101 mean on an Infiniti?

P2101 indicates an issue with the Electric Throttle Control (ETC) system, specifically a performance problem with the throttle actuator control motor.

2. What are the common symptoms of the P2101 code in an Infiniti?

Common symptoms include reduced engine power, hesitation during acceleration, the throttle not responding properly, and the vehicle going into limp mode.

3. What causes the P2101 code to appear on an Infiniti?

The code can be triggered by a faulty throttle body, damaged wiring or connectors, a malfunctioning throttle actuator control motor, or an issue with the engine control module (ECM).

4. Can I drive my Infiniti with the P2101 code?

Driving with the P2101 code is not recommended, as it may lead to reduced performance, safety concerns, and potential damage to the throttle system.

5. How do you diagnose the P2101 code on an Infiniti?

A proper diagnosis involves scanning the ECM for codes, inspecting the throttle body for damage or carbon buildup, checking the wiring and connectors, and testing the throttle actuator motor.

6. How can the P2101 code be fixed on an Infiniti?

Repairs may include cleaning or replacing the throttle body, repairing damaged wiring or connectors, replacing the throttle actuator motor, or reprogramming/updating the ECM if needed.

7. Is the P2101 code related to a dirty throttle body on an Infiniti?

Yes, a dirty or clogged throttle body can restrict airflow and cause the P2101 code to be triggered.

8. How much does it cost to fix the P2101 code on an Infiniti?

Repair costs vary, but throttle body cleaning may cost $100-$200, while throttle body replacement can range from $300-$700, depending on labor and parts.

9. Can a dead battery cause the P2101 code on an Infiniti?

A weak or dead battery may indirectly cause throttle control issues by disrupting the voltage supply to the throttle actuator motor, potentially triggering the P2101 code.

10. Does the P2101 code require ECM replacement on an Infiniti?

ECM replacement is rare and typically only needed if all other components have been ruled out and the ECM is confirmed to be faulty.