← View Generic P0865 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0865: P0865: Transmission Control Module (TCM) Range/Performance Problem

on 2021 Honda PASSPORT

Fix Cost
$500 - $1500
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 P0865 Mean on 2021 Honda PASSPORT?

The Transmission Control Module (TCM) has detected a problem with the transmission's range and performance, possibly due to a faulty sensor or faulty transmission control module.
⚠️

Symptoms

  • • Transmission slips
  • • hesitation
  • • or refuses to engage gears
  • • unusual noises
  • • or difficulty shifting
🔍

Common Causes

  • • Faulty transmission control module
  • • faulty transmission range sensor
  • • faulty transmission pressure sensor
  • • faulty transmission temperature sensor
  • • faulty transmission solenoid
🛠️

How to Fix P0865 on 2021 Honda PASSPORT

1. Clear the code and monitor the vehicle's performance. If the problem persists, replace the transmission control module. 2. Check and replace the faulty sensor(s). 3. Check and replace the faulty solenoid.

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Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

Transmission Control Module Shop ↗ Transmission Range Sensor Shop ↗ Transmission Pressure Sensor Shop ↗ Transmission Temperature Sensor Shop ↗ Transmission Solenoid 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 P0865

P0863 Sequential Code

P0863: Transmission Control Module (TCM) - Low Transmission Fluid Pressure

Medium
P0864 Sequential Code

P0864: Transmission Control Module (TCM) Range/Performance Problem

Medium
P0866 Sequential Code

P0866: Transmission Control Module (TCM) Range/Performance Problem

Medium
P0867 Sequential Code

P0867: Transmission Control Module (TCM) Range/Performance Problem

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