← View Generic P0328 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0328: Knock Sensor 1 Circuit High Input Bank 1

on 2021 Honda PASSPORT

Fix Cost
$50 - $300
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
✅ Yes
Save money
Your Vehicle
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 P0328 Mean on 2021 Honda PASSPORT?

The knock sensor is producing a consistently high signal, indicating sensor failure or wiring problems.
⚠️

Symptoms

  • • Excessive timing retard
  • • reduced power
  • • poor performance
  • • check engine light.
🔍

Common Causes

  • • Faulty knock sensor
  • • wiring short to power
  • • poor connections
  • • electromagnetic interference.
🛠️

How to Fix P0328 on 2021 Honda PASSPORT

Replace knock sensor, repair wiring shorts to power, shield from interference, check connections.

🔧

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

Various - depends on diagnosis Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2021 Honda PASSPORT

Shop Scanners ↗
🔗

Related Diagnostic Codes

Other codes that may appear with P0328

P0326 Sequential Code

Knock Sensor 1 Circuit Range/Performance Problem Bank 1

Medium
P0327 Sequential Code

Knock Sensor 1 Circuit Low Input Bank 1

Medium
P0329 Sequential Code

P0329: Ignition System Misfire

Medium
P0330 Sequential Code

P0330: Ignition System Misfire

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