AutoCodes – Honda – P1890 2000 Honda Civic

P1890 2000 Honda Civic Code - Shift Control System

Quick Answer

The P1890 Honda code refers to a shift control system malfunction in the vehicle. Common causes include Faulty Transmission Valve Body, Transmission Valve Body harness is open or shorted, Transmission Valve Body 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: P1890 2000 Honda Civic indicates Shift Control System.
Common causes: Common causes include Faulty Transmission Valve Body, Transmission Valve Body harness is open or shorted, Transmission Valve Body 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 5,592

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Oct 02, 2025

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1890 2000 Honda Civic Description

The P1890 Honda code refers to a shift control system malfunction in the vehicle. This code is specifically related to the transmission system and indicates that there is an issue with the shift control mechanism. The shift control system is responsible for managing the shifting of gears in the transmission, ensuring smooth and accurate transitions between gears while driving. When this system malfunctions, it can lead to various performance issues and potentially cause long-term damage if not addressed promptly.

OBDII Code P1890 2000 Honda Civic - Shift Control System - AutoCodes.com — P1890 2000 Honda Civic Code - Shift Control System

What does this mean?

What are the Possible Causes of the DTC P1890 2000 Honda Civic?

Faulty Transmission Valve Body
Transmission Valve Body harness is open or shorted
Transmission Valve Body circuit poor electrical connection
Transmission mechanical problems

How to Fix the DTC P1890 2000 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 P1890 2000 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 P1890 2000 Honda Civic code?

Need more information on how to fix the P1890 2000 Honda Civic code? Get Access to Factory Service Manuals

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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 P1890 2000 Honda Civic Code

1. What does OBDII code P1890 on a 2000 Honda Civic indicate?

This code, Shift Control System, is related to a malfunction in the automatic transmission's shift control system.

2. What are the common symptoms of OBDII code P1890 in a 2000 Honda Civic?

Common symptoms include harsh shifting, delayed shifting, transmission slipping, and the transmission staying in one gear.

3. What are the possible causes of OBDII code P1890 in a 2000 Honda Civic?

Potential causes include a faulty shift solenoid, low transmission fluid, a defective transmission control module (TCM), or wiring issues.

4. How can I diagnose the OBDII code P1890 in a 2000 Honda Civic?

Diagnosis involves using a scan tool to retrieve the trouble codes, checking the transmission fluid level and condition, inspecting the shift solenoids, and testing the TCM.

5. What are some repair tips for fixing OBDII code P1890 in a 2000 Honda Civic?

Try starting with a transmission fluid flush and filter replacement, checking and replacing faulty shift solenoids, inspecting and repairing any damaged wiring, or replacing the TCM if necessary.

6. Can I continue driving my 2000 Honda Civic with OBDII code P1890?

It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the transmission and other components.

7. How much does it typically cost to repair OBDII code P1890 in a 2000 Honda Civic?

The cost of repairs can vary depending on the exact cause of the issue, but it can range from a couple of hundred dollars for minor fixes to over a thousand dollars for more extensive repairs.

8. Will resetting the trouble codes make OBDII code P1890 go away in a 2000 Honda Civic?

Resetting the codes may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to return once the problem is detected again.

9. Is it possible to prevent OBDII code P1890 from appearing in a 2000 Honda Civic?

Regular maintenance, such as checking and changing the transmission fluid as recommended, can help prevent issues that may trigger this trouble code.

10. Can a DIY enthusiast fix OBDII code P1890 in a 2000 Honda Civic?

Depending on the level of expertise and access to necessary tools, some DIY enthusiasts may be able to address simpler causes of this code, such as checking and replacing transmission fluid. However, more complex issues may require professional intervention.