← View Generic P0739 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0739: P0739: 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
⚠️

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 P0739 Mean on 2021 Honda PASSPORT?

The P0739 code indicates a malfunction in the transmission control system, which can cause issues with gear shifting and transmission operation.
⚠️

Symptoms

  • • Difficulty shifting gears
  • • slipping or hesitation between gears
  • • transmission warning light on the dashboard
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Common Causes

  • • Faulty transmission solenoid
  • • clogged transmission filter
  • • low transmission fluid level
  • • worn-out transmission seals
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How to Fix P0739 on 2021 Honda PASSPORT

1. Check transmission fluid level and top off if necessary. 2. Inspect and clean the transmission filter. 3. Replace faulty transmission solenoid. 4. Replace worn-out transmission seals.

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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 seals Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with P0739

P0737 Sequential Code

P0737: Transmission Control System Malfunction

Medium
P0738 Sequential Code

P0738: Transmission Control System Malfunction

Medium
P0740 Sequential Code

Torque Converter Clutch Circuit Malfunction

Medium
P0741 Sequential Code

P0741: Transmission Control System Malfunction

Medium

💡 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