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Sold
by simon8201 - 09/09/26 01:46 PM
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Wales
by Joske Vermeule, September 1
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Forums39
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Jun 14th, 2026
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Joined: May 2008
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OP
Has a lot to Say!
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Folks, One of my LM62 Register owners in Italy is having the following error codes from his management system after the light stays on.. "The car is running well but the engine warning light is still on. The error codes it gives are P200 and P272. P200 is: Injector circuit malfunction P272 is: Cylinder 4 contribution/balance fault" I believe it maybe a Lambda Sensor but any other suggestions? He is heading from Florence to Sicily on his annual pilgrimage shortly!!! 
Keith
Car 54 - 'Le Mans 62' 4/4 Supersport
OxMog Member (and associated with CranMog and SwanMog)
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Joined: Mar 2011
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Just Getting Started
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Just Getting Started
Joined: Mar 2011
Posts: 29 |
Hi Minikeefy, the fault codes give you the first part of the diagnosis, P codes are standardised accross all EOBD platforms, * it looks like you have a fault on cylinder 4 which may be an injector related issue eg, supply voltage, short to earth, open circuit for instance.
It would be worth checking the basics first, Spark plugs, HT leads, compressions etc.
At this point I see no reason to see why there is a lambda sensor fault, yes, it may be reading excess oxygen due to the likely hood of a misfire as detected by the fault code P272, Cylinder 4 contribution.
hope this may help
regards Dave
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Ta.. 
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Joined: May 2008
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Has a lot to Say!
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Has a lot to Say!
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To close the thread.... It was the Lambda sensor Now his accelarator cable failed in Sicilly!! (BHM sorted him out though!!)
Keith
Car 54 - 'Le Mans 62' 4/4 Supersport
OxMog Member (and associated with CranMog and SwanMog)
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Member of the Inner Circle
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Member of the Inner Circle
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Complicated things these modern engines! Reminder to Graham.... BUY A READER!
Jays
Former Morgan owner. Gone but hopefully not forgotten!
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Salty Sea Dog Member of the Inner Circle
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Salty Sea Dog Member of the Inner Circle
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Yes, thanks J.  Pre-OBDII, so I have to find one that's compatible with a '93...
Graham (G4FUJ)
Sold L44FOR 4/4 Giallo Fly
'11 MINI Countryman Cooper D All4
'90 LR 90 SW
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Talk Morgan Enthusiast
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Talk Morgan Enthusiast
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Given the actual fault codes, what made you conclude it was the sensor? Nigel
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Only that mine went a while back with a similar code.
Keith
Car 54 - 'Le Mans 62' 4/4 Supersport
OxMog Member (and associated with CranMog and SwanMog)
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