P241A

O2 Sensor Signals Swapped Bank 1 Sensor 1/Bank 1 Sensor 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$22–56 (est.)

Symptoms

Increased fuel consumption
Unstable engine operation
Check Engine light comes on
Increased level of harmful emissions
Reduced engine power

Causes

Incorrect oxygen sensor wiring
Replacing sensors
Wiring damage
Malfunction of oxygen sensors
Problems with the ECU

How to Fix

Check that the oxygen sensors are connected correctly
Inspect the wiring for damage
Replace sensors if they were installed incorrectly
Check the functionality of the oxygen sensors
Scan the ECU for other errors

Related codes

P241B P241C P241D