P1791 1998 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 1998 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.
Code P1791 1998 Honda Civic Description
What are the Possible Causes of the DTC P1791 1998 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 1998 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 1998 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 1998 Honda Civic code?
Need more information on how to fix the P1791 1998 Honda Civic code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1791 1998 Honda Civic code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1791 1998 Honda Civic Code
What does the OBDII code P1791 mean on a 1998 Honda Civic?
The P1791 code indicates a "Vehicle Speed Sensor Range/Performance Problem," meaning the vehicle's speed sensor is not sending accurate or expected data to the engine control module (ECM).
What are the symptoms of the P1791 code in a 1998 Honda Civic?
Common symptoms include erratic or non-functional speedometer readings, harsh or delayed shifting, reduced fuel efficiency, and the check engine light being illuminated.
What causes the P1791 code in a 1998 Honda Civic?
Possible causes include a faulty vehicle speed sensor (VSS), damaged wiring or connectors in the VSS circuit, a malfunctioning ECM, or issues with the transmission itself.
How can I diagnose the P1791 code on my 1998 Honda Civic?
Start by inspecting the VSS and its wiring for damage or loose connections. Use a multimeter to test the sensor for proper voltage and resistance. If no issues are found, check the ECM and transmission for further problems.
Can I still drive my 1998 Honda Civic with the P1791 code active?
While the car may still be drivable, it can experience poor performance, erratic shifting, and reduced safety due to speedometer inaccuracies. It's best to address the issue promptly.
How do I fix the P1791 code on a 1998 Honda Civic?
Common fixes include replacing the faulty vehicle speed sensor, repairing or replacing damaged wiring, cleaning connectors, or, in rare cases, replacing the ECM or addressing transmission issues.
How much does it cost to fix the P1791 code on a 1998 Honda Civic?
Repair costs can vary, but replacing a VSS typically costs $100–$250, including parts and labor. Wiring repairs or ECM replacements may cost more.
Can a dirty or corroded connector cause the P1791 code?
Yes, a dirty or corroded connector in the VSS circuit can disrupt signal transmission, triggering the P1791 code. Cleaning the connections may resolve the issue.
Does the P1791 code affect the transmission in a 1998 Honda Civic?
Yes, the P1791 code can cause transmission issues such as harsh or delayed shifting because the ECM relies on accurate speed sensor data for proper operation.
Do I need special tools to fix the P1791 code on my 1998 Honda Civic?
Basic tools like a multimeter, socket set, and OBDII scanner are usually sufficient for diagnosing and repairing this code. Some repairs may require specialized equipment if the ECM or transmission is involved.
Discuss the causes and fixes for P1791 1998 Honda Civic OBDII Code
Code P1791 1998 Honda Civic comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
