AutoCodes – Honda – P1891 1999 Honda Civic

P1891 1999 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 1999 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 2,137

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 1999 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 1999 Honda Civic - Problem in Start Clutch System - AutoCodes.com — P1891 1999 Honda Civic Code - Problem in Start Clutch System

What does this mean?

What are the Possible Causes of the DTC P1891 1999 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 1999 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 1999 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 1999 Honda Civic code?

Need more information on how to fix the P1891 1999 Honda Civic code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1891 1999 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 1999 Honda Civic Code

1. What does OBDII code P1891 on a 1999 Honda Civic indicate?

The code P1891 in a 1999 Honda Civic points to a problem with the Start Clutch System.

2. What are the common symptoms of a Start Clutch System issue triggering code P1891?

Common symptoms include difficulty starting the vehicle, slipping clutch, and potential stalling during operation.

3. What are the possible causes of OBDII code P1891 in a 1999 Honda Civic?

Causes of code P1891 may include a faulty clutch pressure control solenoid, issues with the clutch pressure control system, or damaged wiring in the system.

4. How can I diagnose the Start Clutch System problem triggering code P1891 in my 1999 Honda Civic?

Diagnosis involves conducting a thorough inspection of the clutch pressure control solenoid, checking for wiring issues, and performing a comprehensive clutch system test.

5. What are the repair options for addressing OBDII code P1891 in a 1999 Honda Civic?

Repair options include replacing the clutch pressure control solenoid, repairing damaged wiring, or addressing any other identified issues within the clutch system.

6. Can I drive my 1999 Honda Civic with OBDII code P1891 present?

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

7. Is it possible to reset OBDII code P1891 in a 1999 Honda Civic without addressing the underlying issue?

While clearing the code may temporarily turn off the check engine light, the underlying problem in the Start Clutch System should be diagnosed and repaired to prevent future issues.

8. How can I prevent OBDII code P1891 from reoccurring in my 1999 Honda Civic?

Regular maintenance of the clutch system, prompt repairs of any clutch-related issues, and following the manufacturer's recommended service intervals can help prevent the reoccurrence of code P1891.

9. Are there any safety concerns associated with OBDII code P1891 in a 1999 Honda Civic?

A malfunctioning Start Clutch System can affect the vehicle's drivability and safety, so it is essential to address code P1891 promptly to ensure safe operation of the vehicle.

10. Can a DIY enthusiast fix the Start Clutch System problem triggering code P1891 in a 1999 Honda Civic?

While some basic troubleshooting steps can be performed by DIY enthusiasts, diagnosing and repairing complex clutch system issues related to code P1891 may require professional expertise and specialized tools.