WOULD CODE PO171, PO300, PO128, AND PO411 ALL PERTAIN TO PRETTY MUCH THE SAME THING.

Question

PROBLEMS WITH MY ENVOY SLUGGISH IS COLD MORNING CRANKING AND COUTS OFF. AFTER WARM RUNS FINE.

Answer 1

P0300 Random misfire

P128 Engine coolant temperature below regulating temperature

P0171 Fuel trim lean Bank 1

P0411 Secondary air injection incorrect flow detected

The secondary air injection , these are known faulty of the inlet or the outlet hose. When there is a misfire in the morning time or cold start up, the engine needs more fuel than air, A vacuum leak would be the first to suspect when it comes to a lean code condition,