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Jun
2006 Ford Focus Secondary Air Injection System. The secondary air injection system injects air into the exhaust to help lower emissions. Secondary Air Injection System Control A Circuit High Possible causes - Faulty Secondary Air System Relay - Secondary Air. During engine warm up the air is directed to the exhaust manifold. How to repair P2257 Ford code Secondary Air Injection System Control A Circuit Low.
Does this makes sense to anybo. How to repair P2257 Ford code Secondary Air Injection System Control A Circuit Low. The Powertrain Control Module grounds the Air Pump Relay Control Circuit which energizes the Air PumpThe PCM also grounds the Air Combination Valve Vacuum Control Solenoid Circuit which energizes the Air Vacuum Control Solenoid. In my case the pump was still working lucky but had water in it and about 1 cup of water blew out the end. Inexpensive fix for code P0491 secondary air injection diverter valve problem. But there can be other reasons the code is thrown as well.
The Ford Focus Air Pump is a vital part of your cars emissions system since the pump works to cut down on the contaminants which depart your combustion chamber by propelling oxygen into a cars exhaust system.
The Powertrain Control Module grounds the Air pump relay control circuit which energizes the Air pumpThe PCM also grounds the Air combination valve vacuum control solenoid circuit which energizes the Air vacuum control solenoid. Inexpensive fix for code P0491 secondary air injection diverter valve problem. An Air Pump is used on the vehicle to lower tail pipe emissions on start-up. P0491 secondary air injection sys insufficient flow B1. Vacuum is then applied to both Air Combination Valve Diaphragms. Vacuum is then applied to both Air combination valve diaphragms.