OBD Guide

P2A05

O2 Sensor Circuit Range/Performance Bank 2 Sensor 3

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Increased fuel consumption
  • Unstable engine operation
  • Check Engine Light Is On
  • Increased emissions of harmful substances
  • Reduced engine power

Causes

  • Oxygen sensor malfunction
  • Damaged or corroded wiring
  • Problems with sensor connectors
  • Leaks in the exhaust system
  • Malfunction of the catalytic converter

How to Fix

  1. Check the condition of the oxygen sensor and its connectors
  2. Check wiring integrity and absence of corrosion
  3. Check the exhaust system for leaks
  4. Replace the oxygen sensor if necessary
  5. Clean or replace the catalytic converter if necessary

Related codes

Error P2A05 by Vehicle Brand