P2218

What it means

NOx Sensor Heater Control Circuit/Open (Bank 2): the control circuit is open. The NOx sensor heater brings the sensor to operating temperature; a fault delays accurate NOx readings used for SCR control.

Is it safe to drive?

This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.

Most likely causes

• Heater winding open

  high

  One of the most commonly reported causes for this code — check this first.

• Pin pushed back out of connector body

  low

  Less common, but worth ruling out after the more likely causes.

• Cracked solder joint inside the module or sensor

  low

  Less common, but worth ruling out after the more likely causes.

Related help

• Full P2218 diagnosis, causes & costs
• How to read check engine light codes
• Is it safe to drive with the light on?