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        General >> OBD Advice >> P0472
        
(Message started by: Pegasus on Mar 30^th, 2007, 9:05pm)

Title: P0472
Post by Pegasus on Mar 30^th, 2007, 9:05pm

Did a scan on v4-max's (John) cossie at the Kent meet and got 2 codes: P1151 &P1132 (?contradictory). Then checked the data LTFT were both -14 to -18%, TPS 18%. MAF looked OK though John's promised to give it a clean.

But when I replayed the scan I noticed another code had appeared - P0472:
Auxillary Emission Controls: exhaust pressure sensor A: circuit low input. ??? Can't find any info. I expect the codes are linked.

Any idea what this means?

Also 1132 (bank 1 sensor =rich) and 1151 (bank 2 sensor =lean) seem to contradict each other since all data indicates its should all be rich - unless 1151 is a really old code that's been hanging around - any thoughts?

Paul

Title: Re: P0472
Post by scorpio_man on Mar 31^st, 2007, 10:47am

hi there

the ltft look like a fpr issue.

the p0472 points to the transducer on the egr, i think.

i'd clear the codes and run it for a week or two. see what comes back, if any. but i would keep an eye of the ltft. don't see that going away, but make sure there's no air leak, etc.

Title: Re: P0472
Post by v4-max on Apr 1^st, 2007, 9:54am

hmm thats interesting thanks. does'nt meen anything to me though :( paul HELLLLLLLLLLLLLLLP

Title: Re: P0472
Post by scorpio_man on Apr 1^st, 2007, 11:15am

hi there

re the transducer, see a photo at the bottom of this page. http://www.fordscorpio.co.uk/faults_misfire2.htm

just check the wiring and make sure the 2 tubes a on.

hth

Title: Re: P0472
Post by Pegasus on Apr 2^nd, 2007, 12:53pm

Thanks for info Andrew.

Funny that code only appeared whilst I was running the scan though.

Title: Re: P0472
Post by scorpio_man on Apr 2^nd, 2007, 1:12pm

hi paul

wiring? :-/ is there a running issue apart from the fueling? maybe try blocking the small vac pipe to the egr for a week or two.

no sure at all, but the ltft were similar to sam's (tintin). fixed with a new fpr, but cat(s) were shot or nearly by there. :(