P2224

NOx Sensor Heater Sense Circuit High Bank 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
Possible problems with passing the environmental test
Noisy engine operation

Causes

Open or short circuit in NOx sensor heating circuit
NOx sensor malfunction
Problems with wiring harness or contacts
Engine control unit malfunction
Corrosion of electrical connections

How to Fix

Check the continuity of the NOx sensor heating circuit
Check the resistance of the sensor heating element
Inspect electrical connections and connectors for corrosion
If necessary, replace the NOx sensor
Check and, if necessary, update the ECU software

Related codes

P2225 P2226 P2227