P225B

NOx Sensor Calibration Memory 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
Deterioration of vehicle dynamics
Increased fuel consumption
Unstable engine idling
Possible unpleasant odor from the exhaust system

Causes

NOx sensor malfunction
Damage to sensor wiring or connectors
Software error in the ECU
Mechanical damage to the exhaust system
Use of low-quality fuel

How to Fix

Check the condition of the NOx sensor and its connectors
Check the integrity of the wiring to the sensor
Read error codes and sensor operating parameters using a scanner
If necessary, replace the NOx sensor
Update ECU software (if required)

Related codes

P225A P225C P2200