AutoCodes – Honda – P1890 Honda

P1890 Honda 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 Honda 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 49,196

How popular is this code, among other codes? Medium

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
Comments
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Code P1890 Honda 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 Honda - Shift Control System - AutoCodes.com — P1890 Honda Code - Shift Control System

What does this mean?

What are the Possible Causes of the DTC P1890 Honda?

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 Honda?

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 Honda 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 Honda code?

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Need Help with the Code?

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Information for Specific Honda Models

P1890 1996 Honda Civic — Shift Control System
P1890 1997 Honda Civic — Shift Control System
P1890 1998 Honda Civic — Shift Control System
P1890 1999 Honda Civic — Shift Control System
P1890 2000 Honda Civic — Shift Control System

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 Honda Code

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PAULO CESAR ANTONIO
Date: February 14, 2024 at 11:55 pm

Carro faz uma redução brusca, como se reduzisse 1@ a 40km/h sobe o giro e fica preso em uma condição de 1@.

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