P2220

NOx Sensor Heater Control Circuit High Bank 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–222 (est.)

Symptoms

Check Engine Light Is On
Possible reduction in engine power
Increased fuel consumption
Problems with passing inspection due to emissions
In some cases - transition to emergency operation mode

Causes

NOx sensor heating circuit open
Sensor heating element malfunction
Problems with the heating circuit relay or fuse
Short circuit in wiring harness
Engine control unit malfunction

How to Fix

Check the integrity of the sensor heating circuit
Measure the resistance of the sensor heating element
Check fuses and relays associated with the heating circuit
Inspect the wiring harness for damage
If necessary, replace the NOx sensor

Related codes

P2219 P2221 P2200