P2223

NOx Sensor Heater Sense Circuit Low Bank 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$167–333 (est.)

Symptoms

Check Engine Light Is On
Increased fuel consumption
Reduced engine power
Dips during acceleration
Unstable idling

Causes

Open or short circuit in NOx sensor heating circuit
NOx sensor malfunction
Problems with power or grounding of the circuit
Engine control unit malfunction
Corroded contacts or damaged wiring

How to Fix

Check the integrity of the wiring and contacts in the heating circuit of the NOx sensor
Check the supply voltage and resistance of the heating element
Check NOx sensor for damage
Replace NOx sensor if necessary
Check and, if necessary, update the software of the control unit

Related codes

P2224 P2222 P2221