AutoCodes – Acura – P0122 Acura

P0122 Acura Code - Throttle Position Sensor 'A' Circuit Low Voltage

Quick Answer

The electronic throttle control system controls the throttle valve opening. Common causes include Faulty Throttle Body, Throttle Body harness is open or shorted, Throttle Body 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 Acura indicates Throttle Position Sensor 'A' Circuit Low Voltage.
Common causes
Common causes include Faulty Throttle Body, Throttle Body harness is open or shorted, Throttle Body 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 24,516
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 02, 2023
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Code P0122 Acura Description

The electronic throttle control system controls the throttle valve opening. The system includes the throttle actuator, the throttle valve, Throttle Position (TP) sensors 'A' and 'B', the Electronic Throttle Control System (ETCS) control relay, the Accelerator Pedal Position (APP) sensor, and the Powertrain Control Module (PCM). TP Sensor 'A' is a semiconductor type, and it is attached to the throttle body and shaft to determine the throttle valve position. The throttle valve position signal from TP Sensor 'A' is transmitted to the PCM for target position feedback control. If the signal from TP Sensor 'A' is a fixed value for a set time, the PCM detects a TP Sensor 'A' malfunction and stores a Diagnostic Trouble Code (DTC).
OBDII Code P0122 Acura - Throttle Position Sensor 'A' Circuit Low Voltage - AutoCodes.com
P0122 Acura Code - Throttle Position Sensor 'A' Circuit Low Voltage

What are the Possible Causes of the DTC P0122 Acura?

  • Faulty Throttle Body
  • Throttle Body harness is open or shorted
  • Throttle Body circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0122 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 P0122 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.

Need more information about the P0122 Acura 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 Acura Code

1. What are the common symptoms of OBDII code P0122 in an Acura?

The common symptoms of OBDII code P0122 in an Acura include poor acceleration, stalling, rough idling, and reduced fuel efficiency.

2. What does the OBDII code P0122 in an Acura indicate?

OBDII code P0122 in an Acura indicates an issue with the Throttle Position Sensor 'A' Circuit, specifically low voltage being detected.

3. What are the possible causes of OBDII code P0122 in an Acura?

Possible causes of OBDII code P0122 in an Acura include a faulty throttle position sensor, damaged wiring or connectors in the sensor circuit, or a problem with the engine control module.

4. How can I diagnose the Throttle Position Sensor 'A' Circuit low voltage issue in my Acura?

To diagnose the Throttle Position Sensor 'A' Circuit low voltage issue in your Acura, you can use a scan tool to read the OBDII code, visually inspect the sensor and its wiring, and perform voltage tests to check for proper signal output.

5. Can I drive my Acura with OBDII code P0122?

It is not recommended to drive your Acura with OBDII code P0122, as it can lead to poor engine performance and potential safety hazards. It's best to address the issue promptly.

6. How can I repair OBDII code P0122 in my Acura?

To repair OBDII code P0122 in your Acura, you may need to replace the throttle position sensor, repair or replace damaged wiring or connectors, or reprogram the engine control module if necessary.

7. Will resetting the check engine light fix OBDII code P0122 in my Acura?

Simply resetting the check engine light will not fix OBDII code P0122 in your Acura. You need to identify and address the underlying issue causing the low voltage in the throttle position sensor circuit.

8. Can a DIY enthusiast fix OBDII code P0122 in an Acura?

Depending on your expertise and access to tools, a DIY enthusiast may be able to fix OBDII code P0122 in an Acura by following proper diagnostic procedures and replacing the faulty components.

9. How much does it cost to repair OBDII code P0122 in an Acura at a dealership?

The cost to repair OBDII code P0122 in an Acura at a dealership can vary based on the specific issue, parts needed, and labor rates. It's recommended to get a detailed estimate from the dealership.

10. Is it important to address OBDII code P0122 promptly in an Acura?

Yes, it is important to address OBDII code P0122 promptly in an Acura to prevent further engine damage, ensure optimal performance, and maintain fuel efficiency.

Discuss the causes and fixes for P0122 Acura OBDII Code

  • Can the po122 throttle sensor effect the transmission, such as shifting at a higher rpm ?

  • What model and year is your Acura? Yes. The throttle position sensor has a great effect on the transmission shifting.

  • What should I replace in this case because I have a 03 acura tl that jave these codes coming up and was told I need to replace the throttle sub.

  • Yes, the most likely cause of the the problem is the Throttle Body. According to a national database of repairs for your vehicle, the most common problem is the throttle body.

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