Hi All, just throwing this out there in the hope someone may have experience with similar issues.
I'll preface this with the disclaimer that I'm no great shakes at working on cars, beyond owning an ODBeleven code reader and a computer to google things with.
I've been struggling with some persistent fault codes and warning lights on the missus Fabia 1.4 Ambiente (56 reg). the car was serviced regularly by the first owner, up until about 5 years ago, when the last owner took over. The service history is pretty much blank after that, with the exception of receipts for new tyres every now and again. We've had it for approx a year now (it's not driven much, for reasons that are about to be explained, lol)
Typical behaviour I see is:
Clear the codes
Drive for half an hour or so
EPC/Engine warning light comes on, sometimes also the traction control (ASR) light also
If the ASR comes on, the car is perilously close to what I can only describe as dying. The power to the engine seems to cut completely, with no throttle response (this has only happened at motorway speeds so far). I get pulled over and turn it off and back on again (sometimes needs a few minutes to 'calm down' before coming on, and the EPC/Engine warning light stay on, but it's running.
Bring it home and do a code scan, usually with it returning something like this (items with 'no trouble codes' removed):
VIN: TMBND46Y174149101
Car: Skoda Fabia
Year: 2007
Body type: 5-dr hatchback
Mileage: 168020 KM
---------------------------------------------------------------
01 Engine
System description: MARELLI 4MV 5954
Software number: 036906034DF
Coding: 00071
Trouble codes:
P1142 - Load detection value below lower limit
Intermittent
---------------------------------------------------------------
03 Brakes
Software number: 6Q0907379AG
Software version: 0002
Hardware number: 6Q0907379AG
Serial number: 00000000000000
Coding: 0002178
Trouble codes:
01314 - Engine control module (ECM) Please read DTC
Intermittent
Priority: 2
Frequency counter: 1
Driving cycle: 237
Mileage: 167999 km
P1857 - Load Signal Error Message from Engine Contr.
Intermittent
Priority: 2
Frequency counter: 1
Driving cycle: 237
Mileage: 167999 km
---------------------------------------------------------------
08 Air Conditioning
System description: Klimaanlage X0840
Software number: 6Y0820045
Trouble codes:
01596 - Fresh/recirc. air flap position motor Open circuit/short circuit to B+
static
01596 - Fresh/recirc. air flap position motor Adaptation did not occur
static
---------------------------------------------------------------
A few other codes have popped up, but the P1142 seems to be the only consistent one.
I've had it cut out a couple of times on the motorway (thank god it was me driving at the time, and not the missus), so obviously it's not inspiring confidence for her to drive.
Things I've (attempted to) check:
Battery voltage (off, start-up and while running)
Brake light illumination
Servo pipes (one found in bad shape and replaced)
Throttle body cleaned
EGR (sort of) cleaned
Front O2 sensor continuity
Spark plugs (but not coil packs, which has just popped into my head as I type this)
The little connector by the gearbox that I've read is the load cable from the alternator and is apparently a common brake point.
I'm pretty much as a loss for where to go next.
We've been to a garage for a diagnostic, but the lights were off at that time, so no help there. In my head, because common codes seem to indicate comms problems, that there must be a broken wire somewhere in one of the looms, but wouldn't feel confident enough to even begin to guess where.
Has anybody got any experience with similar? Any suggestions? I'd even be up for getting a VCDS cable, if it can potentially shed more light than my OBDeleven device. But really at this point, I'm open to any advice on where to look or what to do. If somone has this exact problem and a resolution, that would be amazing too :P