P22BC

O2 Sensor Reference Voltage Performance Bank 2 Sensor 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

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

Causes

Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Malfunction of the oxygen sensor itself
Circuit Grounding Problems
Malfunction of the engine control unit (rare)

How to Fix

Check the integrity of the wiring to the sensor
Clean sensor connector contacts
Check the reference voltage at the sensor
Replace the oxygen sensor if necessary
Check the condition of the catalytic converter

Related codes

P22BD P22BB P22BA