P2244

O2 Sensor Reference Voltage Performance Bank 1 Sensor 1

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
Unstable engine idling
Reduced engine power
Dips during acceleration

Causes

Oxygen sensor malfunction
Open or short circuit in the sensor circuit
Wiring Harness Problems
Corrosion of sensor connector contacts
Engine control unit malfunction

How to Fix

Check the integrity of the sensor wires and connectors
Measure resistance and voltage at the sensor
Check the reference voltage in the sensor circuit
Replace the faulty oxygen sensor if necessary
Reset the error code and check if it returns

Related codes

P2237 P2243 P2245