← View Generic P1381 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P1381: P1381: Fuel Pressure Regulator Control Circuit Low Input

on 2021 Honda PASSPORT

Fix Cost

$100 - $300

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 P1381 Mean on 2021 Honda PASSPORT?

The fuel pressure regulator control circuit low input is detected. This code is specific to Ford vehicles. The fuel pressure regulator is not receiving the correct signal from the engine control module.

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Symptoms

• Rough idle
• poor engine performance
• decreased fuel efficiency
• engine stalling

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Common Causes

• Faulty fuel pressure regulator
• faulty fuel pressure regulator control circuit
• clogged fuel filter
• low fuel pressure

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How to Fix P1381 on 2021 Honda PASSPORT

Replace the fuel pressure regulator, check and clean the fuel filter, check for any leaks in the fuel system, check the fuel pressure regulator control circuit for any damage or corrosion

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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

Fuel Pressure Regulator Shop ↗ Fuel 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 P1381

P1379 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