P22AB

O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–67 (est.)

Symptoms

Check Engine light comes on
Increased fuel consumption
Unstable engine operation at idle
Reduced engine power
Increased emissions of harmful substances

Causes

Broken or damaged oxygen sensor wiring
Oxygen sensor malfunction (bank 1, sensor 2)
Problems in the engine control module (ECU)
Corroded contacts or poor connection in connectors
Damage to positive current control circuit

How to Fix

Check the integrity of the wiring and connectors of the oxygen sensor
Test the oxygen sensor for malfunctions
Check voltage and resistance in control circuit
If necessary, replace the oxygen sensor
Update ECU firmware (if required)

Related codes

P2237 P2243 P2251