AutoCodes – Honda – P1891 1997 Honda Civic

P1891 1997 Honda Civic Code - Problem in Start Clutch System

Quick Answer

The start clutch control system controls the clutch piston hydraulic pressure which affects the amount of power transmission by the multiplate wet start clutch on the driven pulley shaft. Common causes include Faulty CVT Speed Sensor, CVT Speed Sensor harness is open or shorted, CVT 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: P1891 1997 Honda Civic indicates Problem in Start Clutch System.
Common causes: Common causes include Faulty CVT Speed Sensor, CVT Speed Sensor harness is open or shorted, CVT 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.

Save to My Repairs My Repairs

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

Code Popularity 2,329

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 Sep 26, 2019

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 P1891 1997 Honda Civic Description

The start clutch control system controls the clutch piston hydraulic pressure which affects the amount of power transmission by the multiplate wet start clutch on the driven pulley shaft. The Transmission Control Module (TCM) activates the CVT start clutch pressure control solenoid to control the hydraulic pressure that is applied to the start clutch piston in accordance with vehicle conditions. The start clutch control system detects the overslip of the clutch. If the difference between the vehicle speed measured by the driven pulley speed sensor and one measured by the CVT speed sensor is excessive when driving the vehicle under Enable Conditions, a malfunction, excessive clutch slippage is detected and a DTC is stored.

OBDII Code P1891 1997 Honda Civic - Problem in Start Clutch System - AutoCodes.com — P1891 1997 Honda Civic Code - Problem in Start Clutch System

What does this mean?

What are the Possible Causes of the DTC P1891 1997 Honda Civic?

Faulty CVT Speed Sensor
CVT Speed Sensor harness is open or shorted
CVT Speed Sensor circuit poor electrical connection
Faulty Driven Pulley Speed Sensor
Driven Pulley Speed Sensor harness is open or shorted
Driven Pulley Speed Sensor circuit poor electrical connection

How to Fix the DTC P1891 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 P1891 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 P1891 1997 Honda Civic code?

Need more information on how to fix the P1891 1997 Honda Civic code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1891 1997 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 P1891 1997 Honda Civic Code

1. What does OBDII code P1891 in a 1997 Honda Civic indicate?

The code P1891 in a 1997 Honda Civic points to a problem in the Start Clutch System.

2. What are the common symptoms of OBDII code P1891 in a 1997 Honda Civic?

Common symptoms include difficulty starting the vehicle, engine stalling, and a noticeable decrease in acceleration and overall performance.

3. What are the potential causes of OBDII code P1891 in a 1997 Honda Civic?

The code P1891 can be triggered by issues such as a faulty start clutch, damaged wiring or connectors in the start clutch system, or a malfunctioning start clutch relay.

4. How can I diagnose the problem related to OBDII code P1891 in my 1997 Honda Civic?

Diagnosing the issue involves checking the start clutch system components for any visible damage, testing the start clutch relay, and using a diagnostic scanner to pinpoint the exact cause of the code.

5. Can I continue driving my 1997 Honda Civic with OBDII code P1891 present?

It is not recommended to drive the vehicle with the P1891 code active, as it can lead to further damage to the start clutch system and potentially cause safety hazards on the road.

6. How can I repair OBDII code P1891 in my 1997 Honda Civic?

Repairing the issue may involve replacing the faulty start clutch, repairing or replacing damaged wiring, or replacing the start clutch relay, depending on the exact cause of the problem.

7. Are there any DIY tips for fixing OBDII code P1891 in a 1997 Honda Civic?

While basic troubleshooting like checking for loose connections or damaged wiring can be done by DIY enthusiasts, it is recommended to seek professional help for a thorough diagnosis and repair of the start clutch system.

8. How much does it cost to repair OBDII code P1891 in a 1997 Honda Civic?

The cost of repairing the P1891 code can vary depending on the specific cause of the issue, the extent of the damage, and local labor rates. It is advisable to obtain quotes from reputable mechanics or auto repair shops.

9. Can a regular car owner reset OBDII code P1891 in a 1997 Honda Civic?

Resetting the P1891 code can be done using an OBDII scanner or by disconnecting the car's battery for a few minutes. However, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

10. How can I prevent OBDII code P1891 from appearing in my 1997 Honda Civic in the future?

Regular maintenance of the start clutch system, including checking for wear and tear, ensuring proper lubrication, and addressing any issues promptly, can help prevent the recurrence of the P1891 code in your Honda Civic.