P22C1

O2 Sensor Negative Current Control Circuit High 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
Slight increase in fuel consumption
Slightly increased exhaust emissions
Possible minor misfires
Reduced catalytic converter efficiency

Causes

Sensor control circuit short to power
Faulty oxygen sensor Bank 2 Sensor 2
Damage to the wiring harness to the oxygen sensor
Corrosion or poor contact in connectors
Engine control unit (ECU) internal fault

How to Fix

Visual inspection of the sensor wiring and connectors for damage
Checking the resistance and voltage in the sensor control circuit
Checking the operation of the oxygen sensor using a diagnostic scanner
Replacing a faulty oxygen sensor if necessary
Repair or replace damaged wiring

Related codes

P22C0 P22C2 P2230 P2231