AutoCodes – Nissan – P2101 2008 Nissan Altima Sedan

P2101 2008 Nissan Altima Sedan 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 2008 Nissan Altima Sedan 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 4,400

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 2008 Nissan Altima Sedan 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 2008 Nissan Altima Sedan - Electric Throttle Control Performance - AutoCodes.com — P2101 2008 Nissan Altima Sedan Code - Electric Throttle Control Performance

What does this mean?

What are the Possible Causes of the DTC P2101 2008 Nissan Altima Sedan?

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 2008 Nissan Altima Sedan?

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 2008 Nissan Altima Sedan 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 2008 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P2101 on a 2008 Nissan Altima Sedan?

- Common symptoms include the engine's limited power, reduced acceleration, and the vehicle going into limp mode.

2. What can cause the OBDII code P2101 on a 2008 Nissan Altima Sedan?

- The code is typically triggered by issues with the electric throttle control system, such as a faulty throttle body, damaged wiring, or a malfunctioning throttle position sensor.

3. How can I diagnose the OBDII code P2101 on my 2008 Nissan Altima Sedan?

- Diagnosis involves scanning the vehicle's computer for trouble codes, inspecting the throttle body and related components for damage, and testing the throttle position sensor's functionality.

4. Can a dirty throttle body trigger the OBDII code P2101 on a 2008 Nissan Altima Sedan?

- Yes, a dirty throttle body can disrupt the proper functioning of the electric throttle control system, potentially leading to the P2101 trouble code.

5. What are some repair tips for fixing the OBDII code P2101 on a 2008 Nissan Altima Sedan?

- Repair tips may include cleaning the throttle body, checking and repairing any damaged wiring, replacing the throttle position sensor, or recalibrating the throttle control system.

6. Is it safe to continue driving with the OBDII code P2101 illuminated on a 2008 Nissan Altima Sedan?

- It is not recommended to continue driving with the P2101 code present, as it can affect the vehicle's performance and potentially lead to further damage if left unaddressed.

7. How much does it typically cost to repair the OBDII code P2101 on a 2008 Nissan Altima Sedan?

- The cost of repairs can vary depending on the exact cause of the issue, but it may involve expenses for parts replacement, labor, and diagnostic fees.

8. Can resetting the OBDII system clear the P2101 code on a 2008 Nissan Altima Sedan?

- Resetting the system may temporarily clear the code, but if the underlying issue is not fixed, the code is likely to reappear after some driving cycles.

9. Will the OBDII code P2101 on a 2008 Nissan Altima Sedan affect fuel efficiency?

- Yes, the P2101 code can impact fuel efficiency by causing the engine to run inefficiently and consume more fuel than usual.

10. Are there any recalls or technical service bulletins related to the OBDII code P2101 on a 2008 Nissan Altima Sedan?

- It's advisable to check with Nissan dealerships or online resources for any recalls or technical service bulletins specifically addressing the P2101 code in the 2008 Altima Sedan model.