P22BD

O2 Sensor Reference Voltage Circuit Low 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 Illuminates
Slight increase in fuel consumption
Reduced vehicle dynamics
Unstable engine idling
Dips during acceleration

Causes

Open or short circuit in sensor wiring
Oxidation of contacts in connectors
Malfunction of the oxygen sensor itself
Problems with sensor ground
Engine control unit (ECU) malfunction

How to Fix

Visual inspection of sensor wiring and connectors
Checking resistance and continuity
Measuring reference voltage with a multimeter
Replacing the oxygen sensor if necessary
Cleaning contacts and restoring connections

Related codes

P22BE P22BF P22BC