It's my turn to ask the exeprts... anyone ever seen or dealt with a P0411 Code before? Here's what I've gathered so far:
Any comments or suggestions, on this one? My Ford Manual really doesn't say much at all about the Electric AIR Pump assembly.DTC P0411 - Secondary Air Injection (AIR) system upstream flow
POSSIBLE CAUSES: See DTC P1411
DTC P1411 - Secondary Air Injection (AIR) system downstream flow
The secondary air injection system did not detect the presence of air in the exhaust when introduced by the secondary air injection system
l Electric AIR Pump
l Hose from AIR pump leak
l AIR bypass solenoid leak/blocked
l Hose from AIR pump blocked
l AIR bypass solenoid stuck open/closed
In order to test the AIR pump, it must be capable of driving the HO2S lean.
The Secondary Air Injection (AIR) system controls emissions during the first 20 to 120 seconds of engine operation by forcing air downstream into the exhaust manifolds to oxidize the Hydrocarbons and Carbon Monoxide created by running rich at start up.
Electric Secondary Air Injection System
The Electric Secondary Air Injection (AIR) system consists of an Electric Air Pump (EAP), single or dual combination Check Air Injection Diverter (AIR Diverter) Valve(s), an AIR Bypass solenoid, a Solid State Relay, Powertrain Control Module (PCM) and connecting wires and vacuum hoses (Figure 172).
1. The PCM requires ECT, IAT and rpm inputs to initiate Secondary Air Injection function.
2. When the engine is started, the strategy will determine when to enable the EAP. The PCM signals the Solid State Relay and the AIR Bypass solenoid, after a 10 second delay, to begin system operation. Once the catalyst is lit-off, the PCM then signals the Solid State Relay to stop Air Pump operation and the AIR Bypass solenoid to stop the vacuum supply to the AIR Diverter valve(s).
3. The Solid State Relay provides the start-up signal and will switch this high current required to operate the Air Pump.
4. The AIR Bypass solenoid applies a vacuum to the AIR Diverter valve(s) causing it to open and to allow air to flow into the exhaust manifolds.
5. The function of the Splash Cap is to provide the Air Pump with a source of dry air, if equipped.
6.The Electric Air Pump delivers the required amount of air which controls emissions during engine operation. Air is forced into the exhaust manifolds to oxidize the Hydrocarbons and Carbon Monoxide created by running rich at start up[/b]