P2246

O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Increased fuel consumption
Unstable engine operation at idle
Reduced engine power
Check Engine Light Is On
Dips during acceleration

Causes

Oxygen sensor malfunction (Bank 1 Sensor 1)
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Circuit Grounding Problems
Engine ECU malfunction

How to Fix

Check the integrity of the wiring to the oxygen sensor
Check the sensor connector for corrosion or damage.
Measure the resistance and voltage in the sensor circuit
Replace the faulty oxygen sensor if necessary
Reset the error code and check if it appears again

Related codes

P2243 P2245 P2247