Re: OBD II Code P0411 Question
"Ray O" <rokigawa@tristarassociatesDOT.com> wrote in message
> "Jeff Strickland" <firstname.lastname@example.org> wrote in message
>> Secondary Air Injection System Incorrect Flow Detected
>> What is the Secondary Air Injection System? Where do I look to check it
>> I reset the code and it hasn't come on again, but if it does, I want to
>> know where to start looking. I formerly had an engine with a Pulse Air
>> System that shot fresh air into the exhaust stream to give the unburned
>> fuel something to react with in the CAT. Is the Secondary Air Injection
>> System roughly equivelent?
> I'm pretty sure that the code is one with 2-trip detection logic, where
> the ECU has to detect the problem on 2 different trips before turning on
> the MIL, so although it might not come on right away, it may come on after
> a few trips.
> I'll check a manual tonight.
> Ray O
> correct the return address punctuation to reply
Thanks. I also need to understand WHAT the code is checking. I haven't
encountered the Secondary Injection System before, and am not sure what it
Also, the car is missing the gas cap. I know this causes the P0455 that I
saw. I can't imagine there is a relationship between the evaporative
emissions system(P0455) and the secondary injection system (P0411), but I
could be wrong. The car belongs to my daughter's friend, and this girl
doesn't seem to be the brightest candle on the cake. I have no intention of
spending any money, but I'd like to tell her what the problem is.