P2248

O2 Sensor Reference Voltage Performance Bank 2 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
Check Engine Light Is On
Increased emissions of harmful substances
Reduced engine power

Causes

Oxygen sensor malfunction
Damaged or corroded wiring
Poor contact in connectors
Engine control module (ECU) malfunction
Grounding problems

How to Fix

Check the condition of the oxygen sensor
Inspect wiring and connectors for damage
Check sensor reference voltage
Replace sensor if necessary
Check and, if necessary, replace the engine control module

Related codes

P2247 P2249 P2251