Air Injection: Testing and Inspection

If, during open loop fuel control, air injection is not present in the exhaust stream, high first and second hydrocarbon emissions result.

Continuous air injection to the exhaust stream will result in the following condition(s):
^ DTC P0410 will set.
^ Open loop fuel control will be in effect.
^ Backfiring in the exhaust/catalyst system may occur.
^ Catalyst damage may occur.

No air injection to the exhaust stream will result in the following condition(s):
^ DTC P0410 will set.
^ High Hydrocarbon and Carbon Monoxide emissions will occur during open loop fuel control.