Talk Morgan Forums Morgan Sports Cars Maintenance & Servicing Diagnostic Codes on a Roadster

Last year i had an engine management light come up which prompted me to purchase a diagnostic tool. The code displayed was P0174 lean bank 2 with a P0171lean bank 1 pending. My Vgate scan tool quickly cleared The light. So far so good.
I had a recurrence a year later, same code, which i again cleared.
Now the light is coming on on a regular basis.
A previous owner had fitted a Librand exhaust which makes a difference i suppose. Clearly the fault was intermittent and is now worse to the point when the light comes on every time i use the car.
Is it likely to be just a sensor problem in the exhaust? Any opinions?
Incidentally the car runs very well.

I get it occasionally usually in colder weather & when using cheaper fuel.

Buying from BP, Shell or Esso seems to help.

Interesting comment John about cheap fuel as i did use a garage off the beaten track in Suffolk. There are generally two grades of fuel at Shell garages, have you notIced a difference between them with regard to engine management lights?

Paul,
the simple answer is not really. I tend to use 1 in 4 refills of the expensive stuff & swap suppliers as I think that helps. The reality is I expect they are all similar.

In EU where the cheap stuff is 10% EtOH I buy the higher grade.

Paul,
also my S1 has the standard cat & exhaust.
I also find the coil pack sits upfront under the louvres & benefits from damp start yearly as do the plug leads.
John

thanks John. Food for thought.
I think it was you i saw at Hereford last saturday. i was too busy concentrating on roundabout entry to wave and in any case i had the hood up.

Yes you did have the hood up. That was a confusing roundabout. We had already gone the wrong way along that terrible strip of concrete road.

Coming back from south of france a couple of years ago my engine warning light came on 5 times. Each time my obd2 thingy said it was weak mixture on either left bank or right, I suspected that this was down to french fuel.

light very rarely came on in uk. 2007 roadster.

john

On my series 2 3.0l Roadster I have had the check engine light come on 8 times in the 5 years since new (24000 miles). Always PO 460 Fuel level sensor circuit A. I put it down to overfilling the tank.

Andy

I had a warning light come on today in my Healey, then it went off, then it came back on.. Then on and then off..Then I realised it was my indicator.