AutoCodes – Honda – P1890 1999 Honda Civic

P1890 1999 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 1999 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 2,897

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 Oct 02, 2025

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1890 1999 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 1999 Honda Civic - Shift Control System - AutoCodes.com — P1890 1999 Honda Civic Code - Shift Control System

What does this mean?

What are the Possible Causes of the DTC P1890 1999 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 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 P1890 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 P1890 1999 Honda Civic code?

Need more information on how to fix the P1890 1999 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 1999 Honda Civic Code

1. What does OBDII code P1890 mean for a 1999 Honda Civic?

- OBDII code P1890 on a 1999 Honda Civic indicates a problem with the Shift Control System.

2. What are some common symptoms of OBDII code P1890 on a 1999 Honda Civic?

- Common symptoms include harsh shifting, delayed shifting, or failure to shift gears properly.

3. What are possible causes of OBDII code P1890 on a 1999 Honda Civic?

- Possible causes include a faulty shift control solenoid, low transmission fluid, a damaged transmission control module, or wiring issues.

4. How can I diagnose the cause of OBDII code P1890 on a 1999 Honda Civic?

- Diagnose the issue by checking the transmission fluid level, inspecting the shift control solenoid, testing the transmission control module, and examining the wiring for any damage.

5. Can OBDII code P1890 on a 1999 Honda Civic be repaired at home?

- Some simple repairs like topping up transmission fluid can be done at home, but more complex issues may require professional diagnosis and repair.

6. Is it safe to continue driving with OBDII code P1890 on a 1999 Honda Civic?

- It is not recommended to continue driving with OBDII code P1890 as it can lead to further damage to the transmission if not addressed promptly.

7. How much does it typically cost to repair OBDII code P1890 on a 1999 Honda Civic?

- The cost of repairing OBDII code P1890 can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars.

8. Can resetting the OBDII code P1890 on a 1999 Honda Civic resolve the issue?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not fixed, the code is likely to reappear.

9. Are there any preventive maintenance tips to avoid encountering OBDII code P1890 on a 1999 Honda Civic?

- Regularly checking and changing transmission fluid, performing scheduled maintenance, and addressing any shifting issues promptly can help prevent OBDII code P1890.

10. How long does it take to repair OBDII code P1890 on a 1999 Honda Civic?

- The repair time can vary depending on the cause of the issue and the availability of parts, but it may take a few hours to a full day for more complex repairs.