DTC Parameters

• Battery voltage is greater than 10.9 volts.
• Engine run time is greater than 45 seconds.
• Condition exists for longer than 0.5 second.

DTC diagnostic runs continuously after 45 seconds of engine run time when heater is commanded on.

DTC sets when HO2S2 heater current is less than 0.17 amp with heater commanded on for greater than 0.5 second.