AutoCodes – Honda – P0122 1997 Honda Civic

P0122 1997 Honda Civic Code - Throttle Position Sensor 'A' Circuit Low Voltage

Quick Answer

The Throttle Pedal Position (TPP) responds to the accelerator pedal movement. Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle 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: P0122 1997 Honda Civic indicates Throttle Position Sensor 'A' Circuit Low Voltage.
Common causes: Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle 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 9,883

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
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0122 1997 Honda Civic Description

The Throttle Pedal Position (TPP) responds to the accelerator pedal movement. This sensor is a kind of potentiometer which transforms the throttle position into output voltage, and emits the voltage signal to the Engine Control Module (ECM). In addition, the sensor detects the opening and closing speed of the throttle valve and feeds the voltage signal to the ECM.
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.

OBDII Code P0122 1997 Honda Civic - Throttle Position Sensor 'A' Circuit Low Voltage - AutoCodes.com — P0122 1997 Honda Civic Code - Throttle Position Sensor 'A' Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0122 1997 Honda Civic?

Faulty throttle position sensor
Throttle position sensor harness is open or shorted
Throttle position sensor circuit poor electrical connection

How to Fix the DTC P0122 1997 Honda Civic?

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 1997 Honda Civic 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 P0122 1997 Honda Civic Code

1. What are the common symptoms of OBDII code P0122 in a 1997 Honda Civic?

- Common symptoms include poor acceleration, rough idling, stalling, and decreased fuel efficiency.

2. What does the OBDII code P0122 in a 1997 Honda Civic indicate?

- The code P0122 indicates that the Throttle Position Sensor 'A' Circuit is registering a low voltage condition.

3. What are the possible causes of OBDII code P0122 in a 1997 Honda Civic?

- Possible causes include a faulty throttle position sensor, damaged wiring or connectors, a dirty throttle body, or a problem with the engine control module.

4. How can I diagnose the cause of OBDII code P0122 in my 1997 Honda Civic?

- You can use a multimeter to test the throttle position sensor's voltage output, inspect the wiring and connectors for damage, and clean the throttle body to see if it resolves the issue.

5. Can I drive my 1997 Honda Civic with OBDII code P0122?

- It is not recommended to drive with this code as it can lead to poor performance, stalling, and other potential safety issues. It's best to address the problem promptly.

6. How can I repair OBDII code P0122 in my 1997 Honda Civic?

- The most common repair is to replace the throttle position sensor. Ensure the wiring and connectors are in good condition, and consider cleaning the throttle body as well.

7. Will resetting the OBDII code P0122 in my 1997 Honda Civic make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing P0122 is not addressed, the code is likely to return.

8. Can a DIY enthusiast fix OBDII code P0122 in a 1997 Honda Civic?

- Yes, replacing the throttle position sensor and performing basic diagnostic checks like inspecting wiring can be done by a DIY enthusiast with some mechanical knowledge.

9. How much does it cost to repair OBDII code P0122 in a 1997 Honda Civic at a mechanic?

- The cost can vary depending on labor rates and parts prices, but typically, replacing the throttle position sensor can range from $150 to $300 at a mechanic.

10. Is OBDII code P0122 a common issue in 1997 Honda Civics?

- While it can occur in older vehicles, OBDII code P0122 related to the throttle position sensor is not uncommon in vehicles with aging sensors or electrical components.