@T5-T6-Schnappi I had the pipe replaced today, so far no more limp mode, thank you!

I would not recommend this, a garage did this to mine and the turtle appears and limp mode. I think think this also was a factor in my EMAP tube getting blocked. The same garage had a tech tuner try to remove all the codes to stop the turtle and that did not work either.

You will likely be better to get the software from here that tunes and minus EGR. You can back up your original tune up, I think. I hear the tuning here is very good.

@T5-T6-Schnappi do you have a diagram of the thin pipe that can get blocked , back of engine, Volvo tells me to check that and if blocked replace that and Banjo. They said common MAF fault is EMAP pressure related.

Do you know if can be removed and cleaned using same banjo or do I need to replace?

140K that was done also its inside the plastic Valve / injector cover that was also replaced, this was done with all other work. I also checked receipts for parts the oil filler cap was replaced.

I am going to have to book into Volvo, it pains me to do so but I don't think I have another option.

Thanks, We just replaced the EGR Valve and Cooler, cleaned all pipes, it has been smoke tested and the MAP sensor is a new Bosch Sensor in the intake manifold. I will give that a clean and perhaps get a Volvo one.

Smoke test was done the only leak and very slight was oil filler cap, I can replace that also, I have replace the rubber seal, but while better tiny bit of air passing by it.

This is the latest run after clearing the P0100 and the adaptions on Throttle and EGR:

the exact fault sequence with raw hex:

17:56:48 — EGR still working (54.5%, raw 8B), MAP at 255 (FF), speed 53 mph
17:56:54 — EGR drops to 2.35% (raw 06), EGR Error -3.91% (raw 7B), MAP drops to 110
17:56:59 — EGR goes to 0.0% (raw 00) — this is the kill moment. RPM 2700, MAP 221, MAF 109.6 g/s, pedal 49%
17:57:05 — EGR stays 0.0%, Engine Load drops to 0.0% (raw 00) — tortoise mode active, speed 49 mph but decelerating, pedal
released

The exact trigger sequence at raw level:

@T5-T6-Schnappi thanks, here is the history leading to this, In October at around 135K I had the haldex service, oil change and gearbox oil changed, the car had a squeak that I thought was a belt squeaking. I took it in had timing and belts done. The squeak remained. The guy at the time said he could blank the EGR and have the ECU map it out. I had a LR Disco 2 and this same procedure was done there so I agreed. Car ran OK for a short spell then codes started appearing of which the same tech managed to remove but the performance was not correct.

I had them remove the blank and at the same time I had the squeak sorted, this turned out to be Manifold Gasket and loose bolts. At the same time all oil seals were replaced at back of engine. Car ran well for a short time and then same performance issues, so I had the stock Map put back on ECU from the back up.

Since then the turtle. I took to a different garage and they put a scope into the Inlet and carbon was bad, so we replaced the EGR Valve and Cooler and did a Walnut Blast. Still the tortoise and P0100.

I tried a MAF from Ebay, same issue, It then got a new MAF from Volvo same issue and the logging I am doing says the EBAY MAF and the New MAF are very much the same.

The Scanner used was Autel and this only registers the P0100 fault, I will check with the garage again to see if any thing else appears.

The only aftermarket sensor is the MAP, thats a Bosch one, I replaced because original was coked up, but no fault reading for that one.

I am capturing the RAW HEX, I will run capture after clearing all adaptions and see what I can get as the fault appears.

I will try and figure out other things. What makes the J2534-2 protocol different from what I made?

I have another ECU I got from a scrap car to play with on bench going to see what I can do.

@T5-T6-Schnappi yes, it is a sniffer and a DOIP reader. My main aim when I started was to read info and faults from the car, I have lots of data now and an ongoing issue that I am hoping replacing the MAF will solve. Volvo original is over £400 GBP, I tried one cheaper off eBay and the values were higher than the faulty one.

I am consistently getting P0100 fault pending and turtle

I have a faulty - 2016 XC90 D5 - D4204T11 engine 2.0L four-cylinder twin-turbo diesel - Diagnostics Cable

I've made a cable that does both CAN and DOIP and written some software to interrogate the Volvo XC90 MK II D5 AWD, it is in early test but looking promising, and it runs on Ubuntu Linux.

My motivation for doing this is that my XC 90 that I owned from new has had some issues and is in Turtle / Tortoise mode with the only error P0100 Pending (MAF Malfunction)

I've recently fixed all leaks around oil pipes near turbo and had Exhaust Manifold gasket replaced because bolts came loose. It had a new Inlet Manifold under warranty at 97K Miles, and now at 140K has had Walnut Blasting, EGR Valve and Cooler replaced, Pressure Sensor Replaced.

My diagnostics is showing an imbalance of Block temp to thermostat temperature on cooling system which I think is main issue now, 1st I will bleed and top up system

If anyone knows what the DID codes represent below that would be very helpful.

• 0x40E2
  • 0x4311
  • 0x42ED
  • 0x42EE
  • 0x411D
  • 0x438B

Parts required for the cable -

510 Ohm Resistor
Female RJ45 Connector.
ODB2-Cable
CAN Adapter

Use a small straight through RJ45 cable 0.5m to your laptop.

Option 1 - ODB 2 to - Female RJ45
Pin 3 (RX+) - 1 - on the Female RJ45
Pin 11 (RX-) - 2
Pin 12 (TX+) 3
Pin 13 (TX-) - 6
The Resistor goes between pin 8 Activation and 16 is 12v this is needed to bring the IP live.

For the CAN - DSD TECH SH-C31G Isolated USB to CAN Adapter with FD Support Based on Canable 2.0 Pro

GND is Yellow and Orange ODB2 pins 4+5
CAN-H is Green - ODB2 - pin 6
CAN-L is Red/White - ODB2 - pin 14

IMPORTANT - Use a Multi-meter to check wires against pins, suppliers colours may change.

I was hoping I could program keys and maps with this set up but it seems Volvo locked it down and I need other things.

Will the cable I made work with VDASH for my 2016 SPA?

I've written basic software for Ubuntu Linux to diagnose the car, I record history of all feeds from cable every 1s then analyse.