P2250

O2 Sensor Reference Voltage Circuit High Bank 2 Sensor 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–67 (est.)

Symptoms

Increased fuel consumption
Unstable engine operation at idle
Check Engine Light Is On
Reduced engine power
Increased emissions of harmful substances

Causes

Short circuit in the sensor circuit
Oxygen sensor malfunction
Wiring harness damage
Sensor connection problems
Engine control unit (ECU) malfunction

How to Fix

Check the integrity of the sensor circuit for damage
Inspect the sensor connectors for corrosion or poor contact.
Check the reference voltage at the sensor
Replace the oxygen sensor if necessary
Check and replace wiring harness if necessary

Related codes

P2251 P2237 P0135