P241B

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

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine light comes on
Increased fuel consumption
Unstable engine idling
Reduced engine power
Increased emissions of harmful substances

Causes

Incorrect connection of oxygen sensor connectors
Damage to the sensor wiring harness
Error when replacing oxygen sensors
Problems with wiring between sensors and ECU
Malfunction of one of the oxygen sensors

How to Fix

Check that the oxygen sensor connectors are connected correctly
Inspect the wiring harness for damage
Check resistance and wiring integrity
If necessary, replace damaged sensors or wires
Reset the error and check the system operation

Related codes

P241A P241C P241D