looks like are failing some glow plugs and additive tank looks empty or pump fail. try not to regen until you solve these issues. with these DTCs, ESP light will pop for sure, but you should dialog with ESP ecu

 

PAF is just another name for DPF or FAP. Based on those codes I would check glow plugs and relay there could be a fault stopping a successful regen

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All those faults you are getting now would seem, to me, to be as you say a DPF issue. Is the EGR valve still in the circuit as it should be? What does PAF stand for by the way?

 

If the telltales prove out (turn on and then extinguish) the ABS unit is most likely OK.

What faults do you have? Anything related to the MAF sensor?

 

Currently:

P0422 - Regeneration not complete
P1351 - Preheating relay circuit - Relay supplied but plugs never supplied
P1442 - Additive system - Addition of additive impossible or incorrect additive level sensor
P1445 - Max threshold of additive in PAF reached
P1639 - Injection system relay circuit (Power stage) - open circuit.

I did have problems with MAF and Turbo pressure, but have cleared those now. Other faults come and go.

 

Does the ABS telltale illuminate and then go out at key-on?

What engine ecu faults do you have?

 

Both the ABS and ESP light now illuminate and go out when ignition switched on. The car stopped when only the ESP light came on and didn't go out. Corrected by plug and unplug and replace of fuses and cleaning of all connectors with electrical contact cleaner

 

What is the past history of the car. i.e was it working with no faults and then up came the problem or was it left parked due to lockdown for a long time etc

 

We bought it in August last year and it's done about 6k km since then. I can see from the PP2000 history that it had had a lot of things done to it prior to it being sold. We were told it had some work done prior to being sold - but not what it was. I am beginning to suspect the DPF has been removed.

 

Now I have managed to get my PP2000 working - I have been able to perform a global test on my 307.

I have 5 faults on the engine ECU - so I have managed to clear 4 and gain some new ones.

However, it says in the global test phase of the ABS/ESP ECU that "PP2000 Unknown reference - ECU being referenced." and that there is a "presence of faults". When I do a fault check on the ECU - it can find none.

So I guess I either have a faulty wire, or a faulty ESP ECU. At least the car is allowing me to run the engine now, so I can use the car....

 

An update:

Thanks for the suggestions. I disconnected all the connectors to the engine fuse box, ECU and ABS/ESP ECU and cleaned them with contact cleaner. I also replaced all the fuses in the fusebox - I make classic wiring looms so I have a good stock - and then reconnected everything up again.

Reconnected the battery and the ESP light went out and the car started.

Managed to connect a code reader and I have now only 5 error codes rather than the usual 6 or 7.

I think this car is always going to be problematic electrically. I also discovered a spliced wire going into the fuse box, so someone has been tinkering with it before.

Cheers for the suggestions, especially @JJJ DA for his offline help - moltes gràcies.

Andy

 

when esp control unit fails, can bus line goes down. then no communication with engine ecu. you have an oscilloscope? just compare can lines when esp light is on and no dialog with engine ecu. check the wiring diagram, maybe yours is something like that.

 

No You should be able to talk to both ABS/ESP and Engine ECU. Double check maxi fuses tucked down the front of the fuse box.

I would check Engine ECU, ABS Unit and Multiplug & Fusebox electrical connections for water ingress/corrosion.

Then double check harness in and around the battery for broken wires where they may have been disturbed by battery removal

 

No You should be able to talk to both ABS/ESP and Engine ECU. Double check maxi fuses tucked down the front of the fuse box.

I would check Engine ECU, ABS Unit and Multiplug & Fusebox electrical connections for water ingress/corrosion.

Then double check harness in and around the battery for broken wires where they may have been disturbed by battery removal

Thanks, will check those in the morning. The car is garaged, so I don't think water ingress will be a problem. I did check the harness when I cleaned the earth points - I had to replace a chaffed earth wire that was coming out of the loom to the earth point behind the battery tray - that I believe was the OBD connector earth. Maybe that's become uncrimped.

 

does anytime ESP light is on, you can't dialog with engine ECU?

 

Came on probably because the engine stopped and the brain said no traction!

 

Fuel Filter blockage maybe?

 

I don't know at the moment - it's just very strange that the ESP light came on when it died and I can't communicate with the ECU with my new lexia or a standard OBDII

 

So ESP should not affect engine as it is for traction control! Do some basic checks like battery terminals tight, earth points OK. Fuel status as in tank contents.

 

I cleaned the battery points and various earth points on the right side of engine bay about a month ago as I have had various electrical problems, and recently replaced the battery. It has about a half tank of fuel, so I I don't think it would be a lack of fuel.