AutoCodes – Acura – P2128 Acura

P2128 Acura Code - Accelerator Pedal Position Sensor 'B' Throttle Position Sensor 'D' Circuit High Voltage

Quick Answer

Accelerator Pedal Position (APP) sensor B is a part of the Electronic Throttle Control System (ETCS), and it is used to convert the position of the accelerator pedal into electrical signals. Common causes include Faulty Accelerator Pedal Position, Accelerator Pedal Position harness is open or shorted, Accelerator Pedal Position 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: P2128 Acura indicates Accelerator Pedal Position Sensor 'B' Throttle Position Sensor 'D' Circuit High Voltage.
Common causes: Common causes include Faulty Accelerator Pedal Position, Accelerator Pedal Position harness is open or shorted, Accelerator Pedal Position 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 5,283

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P2128 Acura Description

Accelerator Pedal Position (APP) sensor B is a part of the Electronic Throttle Control System (ETCS), and it is used to convert the position of the accelerator pedal into electrical signals. Based on these signals, the Powertrain Control Module (PCM) controls the throttle actuator so that the throttle position agrees with the accelerator pedal position. If the signal voltage from APP sensor A is a set value or less, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).

OBDII Code P2128 Acura - Accelerator Pedal Position Sensor 'B' Throttle Position Sensor 'D' Circuit High Voltage - AutoCodes.com — P2128 Acura Code - Accelerator Pedal Position Sensor 'B' Throttle Position Sensor 'D' Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2128 Acura?

Faulty Accelerator Pedal Position
Accelerator Pedal Position harness is open or shorted
Accelerator Pedal Position circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P2128 Acura?

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 does this mean?

Code Tech Notes

Powertrain Control Module (PCM) may have to be updated.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2128 Acura 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 P2128 Acura Code

1. What are the common symptoms of OBDII code P2128 in an Acura?

- Common symptoms include reduced engine power, acceleration issues, stalling, and the vehicle going into limp mode.

2. What can cause the OBDII code P2128 in an Acura?

- The code P2128 is typically caused by a faulty accelerator pedal position sensor or throttle position sensor, wiring issues, or a malfunction in the engine control module.

3. How can I diagnose the OBDII code P2128 in my Acura?

- Diagnosing the code involves using a scan tool to retrieve the code, checking the sensor readings, inspecting the wiring for damage, and testing the sensor's voltage levels.

4. Is it safe to drive with the OBDII code P2128 in my Acura?

- It is not recommended to drive with the P2128 code present, as it can lead to unsafe driving conditions due to potential acceleration and power issues.

5. Can I reset the OBDII code P2128 in my Acura and see if it comes back?

- While you can reset the code, it is advisable to diagnose and repair the underlying issue causing the code to prevent further problems.

6. How can I repair the OBDII code P2128 in my Acura?

- Repairing the code may involve replacing the faulty accelerator pedal position sensor or throttle position sensor, repairing damaged wiring, or reprogramming the engine control module.

7. Are there any DIY tips for fixing the OBDII code P2128 in an Acura?

- DIY tips include checking the sensor connectors for corrosion, ensuring proper sensor alignment, and following a detailed repair manual for your specific Acura model.

8. Will the OBDII code P2128 cause my Acura to fail an emissions test?

- Yes, the P2128 code can cause your Acura to fail an emissions test, as it indicates a problem with the accelerator pedal position sensor or throttle position sensor.

9. How much does it cost to repair the OBDII code P2128 in an Acura?

- The cost of repairing the P2128 code can vary depending on the extent of the issue, but it may range from $200 to $500 for parts and labor.

10. Can the OBDII code P2128 in my Acura be intermittent?

- Yes, the P2128 code can sometimes be intermittent, but it is essential to address the underlying problem to prevent potential safety hazards and further damage to the vehicle.