P38A 4.6 fault codes

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300bhp/ton

Well-Known Member
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5,029
Location
Near MK
Vehicle is a 4.6 "Thor".

I've never seen these fault codes when using my Nanocom (not saying they won't show, just never seen them).

Used a different diagnostic tool recently and it is displaying these fault codes:
OeIjvg9h.jpg


Anyone know what they mean?

The vehicle runs very well overall. A few years ago it went on a rolling road dyno and according to that is making about bang on the factory power. Since then I've done new leads, plugs and coil packs, as it had developed a slight miss. It is now running super smooth and no misses at all.

It does seem to be slightly less frugal than it once was. I used to get about 17mpg running about. Same sort of use is now 15mpg. On a run I also can't get it above 19mpg any longer (even resetting the trip). Previously it used to see over 21mpg on the trip.

But it is lifted and on MT tyres. But the tyres have been on there for quite a while now.

It also runs a straight through exhaust system, which might contribute to the fuel trim codes.

I'm unclear what would cause a cam or rotor control fault however.

Any thoughts?
 
1172 / 5 could be air flow related possibly maf/air leak
That doc shows two different descriptions for the same code??
mR0Wphph.png

kcm5jgkh.png


All a bit confusing. Although I'm inclined to think the straight through exhaust might be the cause here. Although there is one thing saying lean and another saying rich....
 
It might just need the Long Term trims reset so it re-learns ? Also depends if the O2 sensor outputs are switching correctly.
 
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