P22BF

O2 Sensor Negative Current Control Circuit/Open 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
Reduced engine power
Unstable engine operation at idle
Increased level of harmful emissions

Causes

Open oxygen sensor control circuit
Poor contact in the sensor connector
Malfunction of the oxygen sensor itself
Wiring harness damage
Problems with the engine control unit

How to Fix

Check the integrity of the sensor control circuit
Inspect the connectors and contacts of the sensor
Check the resistance of the oxygen sensor
If necessary, replace the oxygen sensor
Check the operation of the engine control unit

Related codes

P22BE P22C0 P0137