AutoCodes – Honda – P1790 2000 Honda Civic

P1790 2000 Honda Civic Code - Throttle Position Sensor Circuit Malfunction

Quick Answer

The Engine Control Module (ECM) monitors the Throttle Position (TP) Sensor. Common causes include Faulty Throttle Position (TP) 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: P1790 2000 Honda Civic indicates Throttle Position Sensor Circuit Malfunction.
Common causes: Common causes include Faulty Throttle Position (TP) 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,236

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1790 2000 Honda Civic Description

The Engine Control Module (ECM) monitors the Throttle Position (TP) Sensor. The ECM sets the Diagnostic Trouble Code (DTC) when the Throttle Position (TP) Sensor is not to factory specifications.

OBDII Code P1790 2000 Honda Civic - Throttle Position Sensor Circuit Malfunction - AutoCodes.com — P1790 2000 Honda Civic Code - Throttle Position Sensor Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P1790 2000 Honda Civic?

Faulty Throttle Position (TP) Sensor
Throttle Position Sensor harness is open or shorted
Throttle Position Sensor circuit poor electrical connection

How to Fix the DTC P1790 2000 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 P1790 2000 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.

Need more information about the P1790 2000 Honda Civic code?

Need more information on how to fix the P1790 2000 Honda Civic code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1790 2000 Honda Civic code diagnosed by a professional: Find a repair shop in your area

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 P1790 2000 Honda Civic Code

1. What are the common symptoms of OBDII code P1790 (Throttle Position Sensor Circuit Malfunction) in a 2000 Honda Civic?

- Common symptoms include poor acceleration, rough idling, stalling, and issues with shifting gears.

2. What are the possible causes of OBDII code P1790 in a 2000 Honda Civic?

- The code P1790 can be caused by a faulty throttle position sensor, wiring issues, or a malfunctioning engine control module (ECM).

3. How can I diagnose the Throttle Position Sensor Circuit Malfunction in my 2000 Honda Civic?

- Use an OBDII scanner to read the trouble codes, visually inspect the throttle position sensor and its connections, and perform voltage tests on the sensor.

4. Can I drive my 2000 Honda Civic with the P1790 code present?

- It is not recommended to drive with the P1790 code present, as it can lead to poor performance and potential safety hazards.

5. What is the typical repair process for fixing the Throttle Position Sensor Circuit Malfunction in a 2000 Honda Civic?

- The repair process usually involves replacing the faulty throttle position sensor, repairing any damaged wiring, or reprogramming the engine control module.

6. How much does it cost to repair the Throttle Position Sensor Circuit Malfunction in a 2000 Honda Civic?

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

7. Can I reset the P1790 code in my 2000 Honda Civic without repairing the issue?

- While you can clear the code with an OBDII scanner, it is important to address the underlying problem to prevent further damage to the vehicle.

8. Are there any DIY tips for troubleshooting the Throttle Position Sensor Circuit Malfunction in a 2000 Honda Civic?

- You can start by checking the sensor's wiring harness for any visible damage or corrosion, and also ensure the sensor is securely connected.

9. Will a Throttle Position Sensor Circuit Malfunction affect the fuel efficiency of my 2000 Honda Civic?

- Yes, the P1790 code can lead to decreased fuel efficiency due to inaccurate throttle position readings affecting the engine's performance.

10. How long does it take to repair the Throttle Position Sensor Circuit Malfunction in a 2000 Honda Civic?

- The repair time can vary depending on the extent of the issue, but it typically takes between 1 to 2 hours for a professional mechanic to diagnose and fix the problem.