AutoCodes – Acura – P2122 Acura

P2122 Acura Code - Accelerator Pedal Position Sensor 'A' Throttle Position Sensor 'D' Circuit Low Voltage

Quick Answer

Accelerator Pedal Position (APP) sensor A 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: P2122 Acura indicates Accelerator Pedal Position Sensor 'A' Throttle Position Sensor 'D' Circuit Low 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 16,878

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 P2122 Acura Description

Accelerator Pedal Position (APP) sensor A 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 P2122 Acura - Accelerator Pedal Position Sensor 'A' Throttle Position Sensor 'D' Circuit Low Voltage - AutoCodes.com — P2122 Acura Code - Accelerator Pedal Position Sensor 'A' Throttle Position Sensor 'D' Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2122 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 P2122 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2122 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 P2122 Acura Code

1. What does OBDII code P2122 mean on an Acura?

P2122 indicates that the Accelerator Pedal Position Sensor 'A' or Throttle Position Sensor 'D' is detecting a voltage level that is too low, which may affect throttle control.

2. What are the symptoms of code P2122 in an Acura?

Common symptoms include reduced engine performance, unresponsive or limited throttle operation, the vehicle entering limp mode, and the check engine light illuminating.

3. What causes the P2122 code in an Acura?

Possible causes include a faulty accelerator pedal position sensor, damaged wiring or connectors, a failing throttle body, or issues with the engine control module (ECM).

4. Can I drive my Acura with a P2122 code?

Driving with this code is not recommended as it can cause limited throttle response and reduced performance, potentially creating unsafe driving conditions.

5. How do I fix the P2122 code on my Acura?

Repairs may involve replacing the accelerator pedal position sensor, repairing damaged wiring or connectors, cleaning or replacing the throttle body, or reprogramming or replacing the ECM if necessary.

6. How is the P2122 code diagnosed?

A technician will use an OBDII scanner to confirm the code, inspect the accelerator pedal position sensor and its wiring, and test the voltage and continuity of the circuit.

7. Can a dirty throttle body cause a P2122 code?

Yes, a dirty or malfunctioning throttle body can disrupt voltage readings and potentially trigger the P2122 code.

8. How much does it cost to repair a P2122 code on an Acura?

Repair costs vary but typically range from $100 to $500, depending on whether the issue is with the sensor, wiring, throttle body, or ECM.

9. Is the P2122 code specific to Acura vehicles?

No, the P2122 code is a generic OBDII code that can appear on many vehicles, but the exact diagnostic and repair process may vary by make and model.

10. Can a dead battery cause the P2122 code on an Acura?

A dead or weak battery can potentially cause low voltage issues, but it's less likely to be the primary cause of a P2122 code. Always check the sensor and circuit first.