P22B9

O2 Sensor Positive Current Control Circuit Low Bank 2 Sensor 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Increased fuel consumption
Unstable engine idling
Check Engine light comes on
Reduced engine power
Increased level of harmful emissions

Causes

Bank 2 Sensor 2 oxygen sensor malfunction
Open or short circuit in control circuit
Poor contact in the sensor connector
Engine control module malfunction
Corroded contacts or damaged wiring

How to Fix

Check the status of the Bank 2 Sensor 2 oxygen sensor
Check the integrity of the control circuit and wiring harness
Clean the contacts of the sensor connector
Replace the oxygen sensor if necessary
Check and, if necessary, replace the engine control module

Related codes

P22BA P22BB P22BC