AutoCodes – Acura – P0123 Acura

P0123 Acura Code - Throttle Position Sensor 'A' Circuit High 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: P0123 Acura indicates Throttle Position Sensor 'A' Circuit High 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.

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Code Popularity 15,685

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 Aug 02, 2023

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
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Code P0123 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 P0123 Acura - Throttle Position Sensor 'A' Circuit High Voltage - AutoCodes.com — P0123 Acura Code - Throttle Position Sensor 'A' Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0123 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 P0123 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 P0123 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 P0123 Acura Code

1. What are the common symptoms of OBDII code P0123 in an Acura?

- Common symptoms include issues with acceleration, surging or hesitation while driving, poor fuel economy, and in some cases, the Check Engine light may illuminate.

2. What does the OBDII code P0123 for an Acura mean?

- OBDII code P0123 indicates that the Throttle Position Sensor 'A' Circuit is registering a high voltage condition, suggesting a potential problem with the sensor or its wiring.

3. What are the possible causes of OBDII code P0123 in an Acura?

- Possible causes include a faulty throttle position sensor, damaged wiring or connectors in the sensor circuit, a malfunctioning throttle body, or issues with the engine control module (ECM).

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

- Diagnosing this issue typically involves using a scan tool to read the OBDII code, testing the throttle position sensor with a multimeter, inspecting the sensor wiring for damage, and checking the throttle body for any obstructions or malfunctions.

5. Can I drive my Acura with the OBDII code P0123 present?

- It is not recommended to drive your Acura with the P0123 code present, as it can lead to poor performance, reduced fuel efficiency, and potential further damage to the engine components.

6. How can I repair the Throttle Position Sensor 'A' Circuit High Voltage issue in my Acura?

- Repairing this issue may involve replacing the throttle position sensor, repairing or replacing damaged wiring or connectors, cleaning or replacing the throttle body, or resetting the ECM to clear the code.

7. Will resetting the ECM clear the OBDII code P0123 in my Acura?

- Resetting the ECM may temporarily clear the code, but if the underlying issue causing the high voltage condition is not addressed, the code is likely to return.

8. How much does it cost to repair OBDII code P0123 in an Acura?

- The cost of repairing OBDII code P0123 can vary depending on the cause of the issue, but it typically ranges from $100 to $300 for parts and labor.

9. Can a DIY enthusiast repair OBDII code P0123 in an Acura?

- Depending on your skill level and access to tools, it may be possible to diagnose and repair the P0123 code yourself by following a repair manual or online guides. However, if you are unsure, it is best to consult a professional mechanic.

10. How often does the Throttle Position Sensor 'A' Circuit High Voltage issue occur in Acura vehicles?

- The occurrence of the P0123 code can vary, but it is a relatively common issue in Acura vehicles, especially in older models or those with high mileage. Regular maintenance and inspections can help prevent such issues.