AutoCodes – Honda – P1891 1998 Honda Civic

P1891 1998 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 1998 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.

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Code Popularity 2,764

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
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Code P1891 1998 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 1998 Honda Civic - Problem in Start Clutch System - AutoCodes.com — P1891 1998 Honda Civic Code - Problem in Start Clutch System

What does this mean?

What are the Possible Causes of the DTC P1891 1998 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 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 P1891 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 P1891 1998 Honda Civic 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 P1891 1998 Honda Civic Code

1. What does OBDII code P1891 on a 1998 Honda Civic indicate?

The OBDII code P1891 on a 1998 Honda Civic points to a problem in the Start Clutch System.

2. What are the common symptoms of a P1891 trouble code in a 1998 Honda Civic?

Common symptoms of a P1891 trouble code in a 1998 Honda Civic may include difficulty starting the vehicle, engine stalls, or the vehicle not moving when the engine is running.

3. What are the possible causes of the P1891 trouble code in a 1998 Honda Civic?

Possible causes of the P1891 trouble code in a 1998 Honda Civic include a faulty start clutch, issues with the start clutch pressure control solenoid, or wiring problems in the start clutch system.

4. How can I diagnose a P1891 trouble code on my 1998 Honda Civic?

Diagnosing a P1891 trouble code on a 1998 Honda Civic typically involves using an OBDII scanner to retrieve the code, inspecting the start clutch system components for any visible damage or wear, and testing the start clutch pressure control solenoid.

5. Can I still drive my 1998 Honda Civic with a P1891 trouble code?

It is not recommended to drive your 1998 Honda Civic with a P1891 trouble code as it can lead to further damage to the start clutch system and potentially cause the vehicle to stall unexpectedly.

6. How much does it cost to repair a P1891 trouble code on a 1998 Honda Civic?

The cost to repair a P1891 trouble code on a 1998 Honda Civic can vary depending on the exact cause of the issue, but it may involve replacing the start clutch, start clutch pressure control solenoid, or repairing any wiring problems in the system.

7. Can I fix a P1891 trouble code on a 1998 Honda Civic myself?

While some DIY enthusiasts may be able to diagnose and repair a P1891 trouble code on a 1998 Honda Civic, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair to ensure the issue is resolved correctly.

8. Are there any maintenance tips to prevent a P1891 trouble code in a 1998 Honda Civic?

Regular maintenance of the start clutch system, including checking for leaks, ensuring proper fluid levels, and addressing any unusual noises or symptoms promptly, can help prevent issues that may trigger a P1891 trouble code in a 1998 Honda Civic.

9. How long does it take to repair a P1891 trouble code on a 1998 Honda Civic?

The time required to repair a P1891 trouble code on a 1998 Honda Civic can vary based on the extent of the issue and the specific components that need to be replaced or repaired. It is best to consult with a mechanic for an accurate estimate.

10. Can a P1891 trouble code on a 1998 Honda Civic cause other problems if left unresolved?

If left unresolved, a P1891 trouble code on a 1998 Honda Civic can potentially lead to further damage to the start clutch system, engine stalling, or drivability issues, so it is important to address the issue promptly to prevent additional problems.