P22B8

O2 Sensor Positive Current Control Circuit/Open Bank 2 Sensor 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine light comes on
Increased fuel consumption
Reduced vehicle dynamics
Unstable engine idling

Causes

Open oxygen sensor control circuit
O2 sensor malfunction (Bank 2 Sensor 2)
Wiring harness damage
Short circuit in the circuit
Engine control module (ECU) malfunction

How to Fix

Check the integrity of the sensor control circuit
Test O2 sensor resistance and voltage
Inspect the wiring harness for damage
If necessary, replace the oxygen sensor
Reflash or replace the ECU module (if a confirmed fault)

Related codes

P22B7 P22B9 P2238