AutoCodes – Infiniti – P2127 Infiniti

P2127 Infiniti Code - Accelerator Pedal Position Sensor Circuit

Quick Answer

The Accelerator Pedal Position (APP) Sensor is installed on the upper end of the accelerator pedal assembly. Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal 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: P2127 Infiniti indicates Accelerator Pedal Position Sensor Circuit.
Common causes: Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal 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 11,759

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
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2127 Infiniti Description

The Accelerator Pedal Position (APP) Sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the Engine Control Module (ECM). Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals. Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation such as fuel cut.

OBDII Code P2127 Infiniti - Accelerator Pedal Position Sensor Circuit - AutoCodes.com — P2127 Infiniti Code - Accelerator Pedal Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC P2127 Infiniti?

Faulty Accelerator Pedal Position Sensor
Accelerator Pedal Position Sensor harness is open or shorted
Accelerator Pedal Position Sensor circuit poor electrical connection
Faulty Electric Throttle Control Actuator (TP Sensor 1 and 2)
Faulty Engine Control Module (ECM)

How to Fix the DTC P2127 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 P2127 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.

Need more information about the P2127 Infiniti code?

Need more information on how to fix the P2127 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Infiniti Models

P2127 2003 Infiniti G35 — Accelerator Pedal Position Sensor Circuit
P2127 2004 Infiniti G35 — Accelerator Pedal Position Sensor Circuit
P2127 2005 Infiniti G35 — Accelerator Pedal Position Sensor Circuit
P2127 2006 Infiniti G35 — Accelerator Pedal Position Sensor Circuit

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 P2127 Infiniti Code

1. What does OBDII code P2127 mean on an Infiniti?

P2127 indicates a problem with the Accelerator Pedal Position Sensor (APP) Circuit, specifically low voltage in sensor circuit 2.

2. What are the common symptoms of code P2127 in an Infiniti?

Symptoms include reduced engine performance, delayed throttle response, the vehicle entering limp mode, and the check engine light illuminating.

3. What causes the P2127 code to appear on an Infiniti?

Common causes include a faulty accelerator pedal position sensor, damaged wiring or connectors in the circuit, or issues with the engine control module (ECM).

4. How do I diagnose the P2127 code on my Infiniti?

Start by inspecting the accelerator pedal position sensor, checking for loose or damaged wiring, and using a multimeter to test voltage and continuity in the circuit.

5. Can I drive my Infiniti with the P2127 code?

Driving with this code is not recommended as it may lead to reduced throttle response or unsafe driving conditions due to limp mode.

6. How do I fix the P2127 code on my Infiniti?

Repairs may involve replacing the accelerator pedal position sensor, repairing faulty wiring or connectors, or reprogramming the ECM if necessary.

7. How much does it cost to fix the P2127 code on an Infiniti?

Repair costs vary but typically range from $150 to $400, depending on whether you need to replace the sensor or repair wiring.

8. Can a dirty throttle body cause the P2127 code?

While a dirty throttle body can cause throttle response issues, it is not a direct cause of the P2127 code, which is related to the accelerator pedal position sensor circuit.

9. How can I prevent the P2127 code from reoccurring?

Regularly inspect and maintain wiring and connectors, avoid water or debris exposure near the sensor, and address any related issues promptly.

10. Does the P2127 code require sensor calibration after replacement?

Some Infiniti models may require sensor calibration or ECM reprogramming after replacing the APP sensor. Check your vehicleâ€™s service manual for specific instructions.