← View Generic P0837 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0837: P0837: Transmission Control Module (TCM) Range/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

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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 P0837 Mean on 2021 Honda PASSPORT?

The TCM has detected a problem with its internal range and performance calculations, which can cause issues with transmission shifting and performance.

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Symptoms

• Transmission hesitates or jerks
• delayed or abrupt shifting
• difficulty shifting into gear
• transmission warning light on

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Common Causes

• Faulty TCM
• faulty transmission sensors
• wiring issues
• software glitches

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How to Fix P0837 on 2021 Honda PASSPORT

1. Clear the code and monitor the vehicle to see if the problem reoccurs. 2. Check and replace faulty sensors. 3. Update the TCM software. 4. Check and repair wiring issues. 5. Replace the TCM 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.

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Parts for 2021 Honda PASSPORT

Transmission Control Module Shop ↗ Transmission sensors Shop ↗ Wiring harness 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 P0837

P0835 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