← View Generic P0728 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0728: P0728: Transmission Control System Malfunction

on 2021 Honda PASSPORT

Fix Cost

$200 - $800

Parts & Labor

Difficulty

3/5

1-2 hours

DIY Possible?

❌ No

Pro recommended

Your Vehicle

2021 Honda

PASSPORT

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Important for 2021 Honda PASSPORT Owners

Before starting repairs, verify which engine your 2021 Honda PASSPORT has. Check your VIN or engine code to ensure you order the correct parts.

📖 What Does P0728 Mean on 2021 Honda PASSPORT?

The P0728 code indicates a malfunction in the transmission control system, which can cause issues with gear shifting and transmission operation.

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Symptoms

• Difficulty shifting gears
• slipping or hesitation between gears
• transmission warning light on

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Common Causes

• Faulty transmission control module
• faulty transmission solenoid
• clogged transmission filter
• low transmission fluid level

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How to Fix P0728 on 2021 Honda PASSPORT

1. Check transmission fluid level and top off if necessary. 2. Scan for any other trouble codes. 3. Replace faulty transmission solenoid. 4. Clean or replace transmission filter. 5. Update transmission control module software.

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Need Maintenance Info for Your PASSPORT?

Get oil capacity, filter specs, and torque settings for your specific 2021 Honda PASSPORT.

View 2021 Honda PASSPORT Specs

Parts for 2021 Honda PASSPORT

Transmission solenoid Shop ↗ Transmission filter Shop ↗ Transmission fluid Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2021 Honda PASSPORT

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Related Diagnostic Codes

Other codes that may appear with P0728

P0726 Sequential Code

💡 Why These Codes Are Related:

• Similar Issues: Same root cause or component failure
• Related Problems: Often occur together due to system interactions
• Sequential Codes: Progressive failure stages or multiple sensors
• Same System: Components within the same automotive system