← View Generic P0122 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0122: Throttle Position Sensor Circuit Low Input

on 2021 Honda PASSPORT

Fix Cost
$20 - $150
Parts & Labor
Difficulty
2/5
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 P0122 Mean on 2021 Honda PASSPORT?

The throttle position sensor is reading lower voltage than expected, indicating a closed throttle when it may be open.
⚠️

Symptoms

  • • Poor acceleration
  • • stalling
  • • rough idle
  • • engine may not rev up properly.
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Common Causes

  • • Faulty throttle position sensor
  • • wiring short to ground
  • • poor sensor connections
  • • sensor contamination.
🛠️

How to Fix P0122 on 2021 Honda PASSPORT

Replace throttle position sensor, repair wiring shorts to ground, clean sensor connections, check sensor operation.

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Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

MAF Sensor Shop ↗ Air Filter Shop ↗ Vacuum Hoses Shop ↗

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Related Diagnostic Codes

Other codes that may appear with P0122

P0120 Same System

Throttle Position Sensor Circuit Malfunction

Medium
P0121 Same System

Throttle Position Sensor Circuit Range/Performance Problem

Medium
P0123 Same System

Throttle Position Sensor Circuit High Input

Medium
P0124 Same System

P0124: Fuel Pressure Regulator Circuit Malfunction

Medium
P0125 Same System

P0125: Fuel Pressure Regulator Circuit Malfunction

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