← View Generic P0165 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0165: P0165: Fuel Pressure Regulator Circuit Low Input

on 2021 Honda PASSPORT

Fix Cost

$100 - $300

Parts & Labor

Difficulty

3/5

1-2 hours

DIY Possible?

✅ Yes

Save money

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 P0165 Mean on 2021 Honda PASSPORT?

The fuel pressure regulator circuit is receiving a low input signal, indicating a problem with the fuel pressure regulator or its associated sensors.

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Symptoms

• Poor engine performance
• rough idle
• decreased fuel efficiency
• and possible engine stalling

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Common Causes

• Faulty fuel pressure regulator
• clogged fuel filter
• low fuel pressure
• or faulty fuel pressure sensor

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How to Fix P0165 on 2021 Honda PASSPORT

1. Check fuel pressure using a scan tool or gauge; 2. Replace fuel pressure regulator if faulty; 3. Clean or replace fuel filter if clogged; 4. Check fuel pressure sensor connections and replace 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

Fuel Pressure Regulator Shop ↗ Fuel Filter Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with P0165

P0163 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