P019C

O2 Sensor Delayed Response - Rich to Lean Bank 2 Sensor 3

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Increased fuel consumption
Unstable engine operation
Check Engine Light Is On
Increased emissions

Causes

Oxygen sensor malfunction
Wiring harness damage
Poor contact in the sensor connector
Problems with the catalytic converter
Leaks in the exhaust system

How to Fix

Check the condition of the oxygen sensor
Inspect the wiring harness and connectors
Check catalytic converter
Replace the oxygen sensor if necessary
Clear error codes and test drive

Related codes

P0137 P0138 P0140 P0141