P225E

NOx Sensor Performance - Signal Biased/Stuck High Bank 1 Sensor 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Problems with passing inspection due to emissions
Unusual odors from the exhaust system

Causes

NOx sensor malfunction
Damage to the sensor wiring harness
Problems with sensor connectors
Engine control unit malfunction
Contaminated or damaged catalytic converter

How to Fix

Check the condition of the NOx sensor and its connectors
Check the integrity of the wiring harness
Read sensor parameters using diagnostic equipment
If necessary, replace the NOx sensor
Update ECU software (if required)

Related codes

P225F P2200 P2201