Getting from lane 3 to safety using what momentum I had (in a 40mph specs zone) was fun....
A bit of background first:
The car is quite new to me, so I'm still learning it's individual foibles and P2 stuff in general.
It's a 2002 V70D5, manual, with 226k. It came to me as spares or repair as it would enter limp mode on anything other than very modest throttle. A fuel filter seemed to sort it out. I've done various other servicing and maintenance and the car seems in pretty good order.
I was on the return leg of a 100 mile ish round trip, the car had been running fine on the outward leg but went into limp mode on the way back.
I read/cleared the code with Torque and it seemed to correspond to the generic code that corresponds to ECM6805. The car started, albeit it did seem to turn a few more times than normal, and I resumed the drive.
At this point the OBC reported 100 miles to empty and I was concerned that it might be so wrong that I was actually running out of fuel.
After 15 miles or so without further problem I thought it was ok, until it cut out completely on the motorway.
At that point it was not for starting at all and I still thought it was out of fuel.
I was recovered from the motorway and met at services by an AA patrol.
After fuelling the car it still didn't start, so we began ripping it apart suspecting fuel pump failure,
Despite taking out what seemed like the whole interior we still weren't getting anywhere until the AA guy started digging around under the dash and found this:

Apologies for the bad phone picture, but that (as I now know) is the ECM. The scorching on it is pretty bad.
This thing (a resistor according to Vadis) was in the slots:

The contacts on the resistor were badly oxidised, and the contacts on the ecm were horrendous.
A quick clean with emery cloth and the car started, so this does seem to have been the problem.
I've managed to remove the two burnt connectors from the ECM and replace them, so *hopefully* that will be the end of that. The wires seemed very corroded, almost like there had been water ingress, so perhaps that was the root of the problem at some point.
Moving on, does anyone know what the purpose of that component (resistor) is? - I assume it's in the fuel pump circuit but I have no idea.
I must say that the AA guy was one in a million and was determined to get to the root of the problem, I'm very grateful for his assistance.
Thanks also to Tim for taking my call out of hours.


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