AutoCodes – Honda – P1791 1997 Honda Civic

P1791 1997 Honda Civic Code - Vehicle Speed Sensor Range/Performance Problem

Quick Answer

The Vehicle Speed Sensor (VSS) is driven by the differential. Common causes include Faulty Vehicle Speed Sensor, Vehicle Speed Sensor harness is open or shorted, Vehicle Speed 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
P1791 1997 Honda Civic indicates Vehicle Speed Sensor Range/Performance Problem.
Common causes
Common causes include Faulty Vehicle Speed Sensor, Vehicle Speed Sensor harness is open or shorted, Vehicle Speed 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,281
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 19, 2019
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Code P1791 1997 Honda Civic Description

The Vehicle Speed Sensor (VSS) is driven by the differential. It generates a pulsed signal from an input 5 volts. The number of pulses per minute increases/decreases with the speed of the vehicle.
OBDII Code P1791 1997 Honda Civic - Vehicle Speed Sensor Range/Performance Problem - AutoCodes.com
P1791 1997 Honda Civic Code - Vehicle Speed Sensor Range/Performance Problem

What are the Possible Causes of the DTC P1791 1997 Honda Civic?

  • Faulty Vehicle Speed Sensor
  • Vehicle Speed Sensor harness is open or shorted
  • Vehicle Speed Sensor circuit poor electrical connection

How to Fix the DTC P1791 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 P1791 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.

Need more information about the P1791 1997 Honda Civic code?

Need more information on how to fix the P1791 1997 Honda Civic code? Get Access to Factory Service Manuals

Need Help with the 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 P1791 1997 Honda Civic Code

1. What are the common symptoms of OBDII code P1791 on a 1997 Honda Civic?

The common symptoms of OBDII code P1791 in a 1997 Honda Civic include erratic speedometer readings, issues with cruise control functionality, and potential transmission shifting problems.

2. What is the main cause of the P1791 code in a 1997 Honda Civic?

The main cause of OBDII code P1791 in a 1997 Honda Civic is often a malfunction or failure of the vehicle speed sensor (VSS) located on the transmission.

3. How does the vehicle speed sensor affect the performance of a 1997 Honda Civic?

The vehicle speed sensor on a 1997 Honda Civic is crucial for providing data to the vehicle's onboard computer to calculate vehicle speed, transmission shift points, and enable proper operation of the speedometer and cruise control.

4. How can I diagnose the P1791 code in my 1997 Honda Civic?

To diagnose the P1791 code in a 1997 Honda Civic, you can start by checking the vehicle speed sensor for any visible damage, testing its electrical connections, and using a scan tool to monitor the sensor's output while driving.

5. What are some repair tips for fixing the P1791 code on a 1997 Honda Civic?

Repair tips for addressing the P1791 code on a 1997 Honda Civic include inspecting and replacing the vehicle speed sensor if necessary, checking the sensor wiring for any issues, and clearing the trouble code after repairs are made.

6. Can driving with the P1791 code present cause further damage to a 1997 Honda Civic?

Continuing to drive a 1997 Honda Civic with the P1791 code present can potentially lead to issues with accurate speed readings, transmission performance, and overall drivability, so it's recommended to address the problem promptly.

7. How much does it typically cost to repair the P1791 code on a 1997 Honda Civic?

The cost to repair the P1791 code on a 1997 Honda Civic can vary depending on the extent of the issue, but it may involve expenses for a new vehicle speed sensor, labor costs for installation, and potential diagnostic fees.

8. Are there any DIY repairs I can attempt for the P1791 code on my 1997 Honda Civic?

While diagnosing and repairing the P1791 code may require some technical knowledge, DIY enthusiasts can attempt tasks like checking and cleaning the vehicle speed sensor connections or replacing the sensor themselves to save on repair costs.

9. Will resetting the trouble codes clear the P1791 code on a 1997 Honda Civic?

Resetting the trouble codes may temporarily clear the P1791 code on a 1997 Honda Civic, but if the underlying issue with the vehicle speed sensor is not addressed, the code is likely to reappear after driving the vehicle.

10. Is it safe to drive a 1997 Honda Civic with the P1791 code if the vehicle seems to be operating normally?

Even if the 1997 Honda Civic appears to be operating normally with the P1791 code present, it's advisable to address the issue promptly to prevent potential transmission problems, inaccurate speed readings, or loss of cruise control functionality in the future.

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