P2254

O2 Sensor Negative Current Control Circuit/Open Bank 2 Sensor 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

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

Causes

Broken or damaged oxygen sensor wiring
Bank 2 Sensor 1 Oxygen Sensor Malfunction
Short circuit in control circuit
Poor contact in the sensor connector
Engine ECU malfunction

How to Fix

Check the integrity of the oxygen sensor wiring
Check connectors and contacts for oxidation and damage
Test the oxygen sensor with a multimeter
Replace the oxygen sensor if necessary
Check control circuit for short circuit

Related codes

P2251 P2252 P2253