P239F

O2 Sensor Out of Range During Deceleration Bank 2 Sensor 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine light comes on
Increased fuel consumption
Unstable engine operation when braking
Reduced engine power

Causes

Malfunction of oxygen sensor bank 2 sensor 2
Damage to the wiring or sensor connector
Exhaust gas leak in front of the sensor
Problems with the EVAP system
Malfunction of the catalytic converter

How to Fix

Check the status of the O2 sensor bank 2 sensor 2
Inspect the sensor wiring and connectors for damage
Check the exhaust system for leaks
Test the operation of the catalytic converter
Replace the faulty oxygen sensor if necessary

Related codes

P239E P240F P241F