← View Generic P0925 Guide Severity: High
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0925: P0925: Transmission Advanced System - Transmission Control Module (TCM) Internal Error

on 2021 Honda PASSPORT

Fix Cost
$500 - $2000
Parts & Labor
Difficulty
4/5
2-4 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 P0925 Mean on 2021 Honda PASSPORT?

The Transmission Control Module (TCM) has detected an internal error, which may be caused by a faulty TCM, wiring issue, or other internal transmission component failure.
⚠️

Symptoms

  • • Transmission slips
  • • hesitation
  • • or refuses to engage gears
  • • unusual noises
  • • or transmission warning light on the dashboard
🔍

Common Causes

  • • Faulty TCM
  • • wiring issue
  • • internal transmission component failure
  • • transmission fluid leak
  • • or low transmission fluid level
🛠️

How to Fix P0925 on 2021 Honda PASSPORT

1. Check transmission fluid level and condition, 2. Inspect wiring and connectors for damage or corrosion, 3. Scan for any other trouble codes, 4. Replace faulty TCM or internal transmission component if necessary

🔧

Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

Transmission Control Module Shop ↗ Transmission fluid Shop ↗ Wiring harness Shop ↗

Essential Tool

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OBD2 Scanner

Read & clear codes on your 2021 Honda PASSPORT

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Related Diagnostic Codes

Other codes that may appear with P0925

P0923 Sequential Code

P0923: Transmission Advanced System - Transmission Control Module (TCM) Internal Error

High
P0924 Sequential Code

P0924: Transmission Advanced System - Transmission Control Module (TCM) Internal Error

Medium
P0926 Sequential Code

P0926: Transmission Advanced System - Transmission Control Module (TCM) Internal Error

Medium
P0927 Sequential Code

P0927: Transmission Advanced System - Transmission Control Module (TCM) 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