← View Generic P0801 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0801: P0801: Transmission Control Module (TCM) Performance Problem

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
⚠️

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 P0801 Mean on 2021 Honda PASSPORT?

The TCM has detected a performance problem, such as a malfunctioning transmission solenoid or a faulty transmission sensor, which is affecting the transmission's ability to function properly.
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Symptoms

  • • Transmission slipping
  • • hesitation
  • • or failure to engage gears
  • • unusual noises
  • • or difficulty shifting into gear
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Common Causes

  • • Faulty transmission solenoid
  • • faulty transmission sensor
  • • clogged transmission filter
  • • low transmission fluid level
  • • or a malfunctioning transmission control module
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How to Fix P0801 on 2021 Honda PASSPORT

1. Check transmission fluid level and condition; 2. Scan for any other trouble codes; 3. Test transmission solenoids and sensors; 4. Replace faulty solenoids or sensors; 5. Clean or replace transmission filter; 6. Update transmission control module software if necessary

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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 sensor Shop ↗ Transmission filter 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 P0801

P0799 Sequential Code

P0799: Transmission Control System Malfunction

Medium
P0800 Sequential Code

P0800: Transmission Control System Malfunction

Medium
P0802 Sequential Code

P0802: Transmission Control Module (TCM) Range/Performance Problem

Medium
P0803 Sequential Code

P0803: Transmission Control Module (TCM) Range/Performance Issue

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