AutoCodes – Nissan – P0122 2009 Nissan Pathfinder

P0122 2009 Nissan Pathfinder Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Quick Answer

The Throttle Pedal Position (TPP) responds to the accelerator pedal movement. Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor 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: P0122 2009 Nissan Pathfinder indicates Throttle Position Sensor/Switch '1' Circuit Low Input.
Common causes: Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor 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 3,075

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 Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0122 2009 Nissan Pathfinder Description

The Throttle Pedal Position (TPP) responds to the accelerator pedal movement. This sensor is a kind of potentiometer which transforms the throttle position into output voltage, and emits the voltage signal to the Engine Control Module (ECM). In addition, the sensor detects the opening and closing speed of the throttle valve and feeds the voltage signal to the ECM.
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.

OBDII Code P0122 2009 Nissan Pathfinder - Throttle Position Sensor/Switch '1' Circuit Low Input - AutoCodes.com — P0122 2009 Nissan Pathfinder Code - Throttle Position Sensor/Switch '1' Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0122 2009 Nissan Pathfinder?

Faulty throttle position sensor
Throttle position sensor harness is open or shorted
Throttle position sensor circuit poor electrical connection
Faulty accelerator pedal position sensor

How to Fix the DTC P0122 2009 Nissan Pathfinder?

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 P0122 2009 Nissan Pathfinder 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.

Need more information about the P0122 2009 Nissan Pathfinder code?

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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 P0122 2009 Nissan Pathfinder Code

What are the common symptoms of OBDII code P0122 in a 2009 Nissan Pathfinder?

Common symptoms include poor acceleration, stalling, rough idling, and decreased fuel efficiency.

What are the possible causes of OBDII code P0122 in a 2009 Nissan Pathfinder?

The code P0122 typically indicates an issue with the throttle position sensor (TPS) or its circuit, such as a faulty TPS, damaged wiring, or a corroded connector.

How can I diagnose the cause of OBDII code P0122 in my 2009 Nissan Pathfinder?

You can use a multimeter to test the throttle position sensor's voltage output and check the wiring connections for any signs of damage or corrosion.

What are some repair tips for fixing OBDII code P0122 in a 2009 Nissan Pathfinder?

Repair options may include replacing the throttle position sensor, repairing damaged wiring, or cleaning corroded connectors to resolve the low input signal issue.

Can OBDII code P0122 in a 2009 Nissan Pathfinder cause further damage if left untreated?

Continuing to drive with a faulty throttle position sensor can lead to poor engine performance, potential stalling, and even damage to other engine components over time.

Is it safe to drive my 2009 Nissan Pathfinder with OBDII code P0122 present?

It is not recommended to drive the vehicle with OBDII code P0122 as it can affect the engine's performance and potentially lead to unsafe driving conditions.

How much does it typically cost to repair OBDII code P0122 in a 2009 Nissan Pathfinder?

The cost of repairs for OBDII code P0122 can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

Can I reset OBDII code P0122 in my 2009 Nissan Pathfinder using a diagnostic scanner?

Yes, you can use an OBDII scanner to clear the code P0122 after repairing the underlying issue with the throttle position sensor or its circuit.

Should I attempt to fix OBDII code P0122 in my 2009 Nissan Pathfinder myself or seek professional help?

If you have experience with automotive repairs and diagnostics, you may attempt to fix OBDII code P0122 yourself. However, if you are unsure or unfamiliar with the process, it is best to seek professional help to ensure the issue is properly diagnosed and resolved.