← View Generic P0133 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0133: Oxygen Sensor Circuit Slow Response Bank 1 Sensor 1

on 2021 Honda PASSPORT

Fix Cost
$50 - $250
Parts & Labor
Difficulty
2/5
30 mins - 1 hour
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 P0133 Mean on 2021 Honda PASSPORT?

The upstream oxygen sensor on bank 1 is responding too slowly to changes in exhaust oxygen content.
⚠️

Symptoms

  • • Poor fuel economy
  • • sluggish acceleration
  • • failed emissions test
  • • check engine light.
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Common Causes

  • • Aging oxygen sensor
  • • contaminated sensor
  • • exhaust leaks
  • • wiring resistance
  • • poor sensor ground.
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How to Fix P0133 on 2021 Honda PASSPORT

Replace oxygen sensor, repair exhaust leaks, check wiring and ground connections, clean sensor area.

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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

Oxygen Sensor Shop ↗ O2 Sensor Socket Shop ↗

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Related Diagnostic Codes

Other codes that may appear with P0133

P0130 Same System

Oxygen Sensor Circuit Malfunction Bank 1 Sensor 1

Medium
P0131 Same System

Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 1

Medium
P0132 Same System

Oxygen Sensor Circuit High Voltage Bank 1 Sensor 1

Medium
P0134 Same System

Oxygen Sensor Circuit No Activity Detected Bank 1 Sensor 1

Medium
P0135 Same System

Oxygen Sensor Heater Circuit Malfunction Bank 1 Sensor 1

Medium
P0420 Related Problem

Catalyst System Efficiency Below Threshold Bank 1

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