← View Generic P0787 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0787: P0787: Transmission Control System Malfunction

on 2021 Honda PASSPORT

Fix Cost

$200 - $1000

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 P0787 Mean on 2021 Honda PASSPORT?

The P0787 code indicates a malfunction in the transmission control system, which can cause issues with gear shifting and transmission operation.

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Symptoms

• Slipping or hesitation between gears
• difficulty shifting
• transmission warning light on

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Common Causes

• Faulty transmission control module
• faulty transmission solenoid
• faulty transmission sensor
• low transmission fluid level

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How to Fix P0787 on 2021 Honda PASSPORT

1. Check transmission fluid level and top off as needed. 2. Scan for any other trouble codes. 3. Replace faulty transmission control module. 4. Replace faulty transmission solenoid. 5. Replace faulty transmission sensor.

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Need Maintenance Info for Your PASSPORT?

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

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Parts for 2021 Honda PASSPORT

Transmission control module Shop ↗ Transmission solenoid Shop ↗ Transmission sensor Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with P0787

P0785 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