This guide is customized for your 2021 Honda PASSPORT
B1381: B1381: Body Control Module (BCM) - Low Beam Headlight Relay Circuit Malfunction
on 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 B1381 Mean on 2021 Honda PASSPORT?
Symptoms
- • Dim or inoperative low beam headlights
- • intermittent or complete loss of low beam headlight function
Common Causes
- • Faulty low beam headlight relay
- • corrosion or damage to the relay circuit
- • wiring issues
- • or a malfunctioning BCM
How to Fix B1381 on 2021 Honda PASSPORT
1. Check the relay circuit for corrosion or damage and clean or replace as necessary. 2. Inspect the wiring for any signs of damage or wear and tear. 3. Test the low beam headlight relay to ensure it is functioning properly. 4. If the issue persists, replace the BCM.
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Related Diagnostic Codes
Other codes that may appear with B1381
B1379: Power Window Circuit Malfunction
B1380: Seat Switch Circuit Malfunction
B1382: Body System Security Malfunction
B1383: Audio System Malfunction
💡 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