← View Generic P1000 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
P1000: P1000: Manufacturer Specific Powertrain System Code
on 2021 Honda PASSPORT
Fix Cost
$100 - $500
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 P1000 Mean on 2021 Honda PASSPORT?
Ford: This code indicates a problem with the engine control module (ECM) or powertrain control module (PCM) communication. Toyota: This code is related to the engine control module (ECM) or transmission control module (TCM) communication. Honda: This code is a generic communication error between the engine control module (ECM) and other modules.
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Symptoms
- • Check engine light
- • loss of power
- • rough idling
- • decreased fuel efficiency
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Common Causes
- • Faulty communication between modules
- • loose or damaged wiring
- • module failure
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How to Fix P1000 on 2021 Honda PASSPORT
Check and repair or replace wiring, update software, replace faulty module
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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 SpecsParts for 2021 Honda PASSPORT
Essential Tool
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Related Diagnostic Codes
Other codes that may appear with P1000
P0998
Sequential Code
P0998: Transmission Advanced System - Pressure Control Solenoid 'A' Circuit Low
Medium
P0999
Sequential Code
P0999: Transmission Advanced System Malfunction
Medium
P1001
Sequential Code
P1001: Manufacturer Specific Powertrain System Code
Medium
P1002
Sequential Code
P1002: Manufacturer Specific Powertrain System Code
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