Drive cycle to set 2009 VW Touareg V6 TDI OBD readiness?

[JonA]

Cannot for the life of me get the "oxidation catalytic converter" or "monitoring of DPF filter" readiness to set. Drove 300mi the first time around, reset everything just to see if it would make a difference (probably should have just kept going but whatever) and I'm up to 250 this time around.

I'm hoping someone out there might know of a document similar to this one that covers the CATA readiness drive cycle.

Spoiler: DPF MVB104 for those curious

DPF values look good to me, tailpipe is clean, and as some may know I've tried forcing a regen and it seems to put the car in limp mode, or at least kicks it out of gear. DPF values:

• particle filter oil ash volume: 0.4
• particle filter carbon mass (calculated): 18
• particle filter carbon mass (actual): 9
• since last regen: 620km

 

[PRY4SNO]

Dumb question: can you just unplug the battery for 10-15 minutes and try again?

I got stranded on the road in the middle of nowhere in a new Duramax with DPF limp mode, doing that got me home and got the company truck into the dealership for service.

 

[JonA]

Unplugging the battery will reset all readiness monitors unfortunately, trying to avoid that at the moment. I'm not really having a DPF issue per se, just the DPF readiness monitor.

I tried the drive cycle for DPF readiness from the linked PDF (40mins in 5th gear going 60mph, and even tried another 30mins in 4th gear at 60mph) and no dice, still "not completed." Just hoping someone's got the drive cycle to set those monitors to ready on CATA so I can get it done without driving randomly for another 300mi... sorry, went on about the DPF in the original post a bit much haha.

 

[TurboABA]

I'm hoping someone out there might know of a document similar to this one that covers the CATA readiness drive cycle.

That IS the document that covers your CATA.... the engine code they listed for the 09-10 is incorrect

 

[TurboABA]

Cannot for the life of me get the "oxidation catalytic converter" or "monitoring of DPF filter" readiness to set. Drove 300mi the first time around,

Can you share your readiness bits?

 

[TurboABA]

Drove 300mi the first time around, reset everything just to see if it would make a difference (probably should have just kept going but whatever) and I'm up to 250 this time around.

Resetting starts the process over again.... so now you're only 250mi since start, which when you convert it to km tells you that you still haven't had a regen (aka the requirement as per document linked).... so keep driving until one takes place.... maybe do some less optimal driving or manually trigger one since you're loads aren't high enough to trigger one yet.

• particle filter carbon mass (calculated): 18
• particle filter carbon mass (actual): 9
• since last regen: 620km

As you can see, your last regen was prior to those 250mi you're racked up since the reset.

 

[JonA]

That IS the document that covers your CATA.... the engine code they listed for the 09-10 is incorrect

Ah interesting, the engine code mismatch threw me off, thanks so much. Knowing this is exactly what I needed. If I refer to table 2 (p. 7) of that doc, I can see procedures 2a-2c should set 89/4 bit 6 (PM monitor), and 3a (which relates to DPF as well) sets 89/4 bit 0. Awesome.

Additional note, there's no way I would have ever completed 2b naturally, ha.

---

Can you share your readiness bits?

Bits:

00000000
00001111
11101011
01000001

So decoding this...

• Byte 1, no codes stored.
• Byte 2, which functions are supported:
  • Bit0, misfire monitoring ------------------------------ supported
  • Bit1, fuel system monitoring ------------------------- supported
  • Bit2, comprehensive component monitoring -------- supported
  • Bit3, compression ignition monitoring --------------- supported
  • Bit4, test misfire monitoring complete ---------------- completed
  • Bit5, test fuel system monitoring ---------------------- completed
  • Bit6, test comprehensive component monitoring ---- completed
  • Bit7, optional
• Byte 3, which monitors are supported:
  • Bit0, NMHC catalyst monitoring ----------------- supported
  • Bit1, NOx/SCR after treatment monitoring ------ supported
  • Bit2, optional
  • Bit3, boost pressure system monitoring --------- supported
  • Bit4, optional
  • Bit5, exhaust gas monitoring --------------------- supported
  • Bit6, PM filter monitoring ------------------------- supported
  • Bit7, EGR system monitoring ---------------------- supported
• Byte 4, readiness status ofsupported systems from byte 3:
  • Bit0, test NMHC catalyst monitoring ------------ not completed
  • Bit1, test NOx/SCR after-treatment monitoring ----- completed
  • Bit2, optional
  • Bit3, test boost pressure system monitoring --------- completed
  • Bit4, optional
  • Bit5, test exhaust gas sensor monitoring ------------ completed
  • Bit6, test PM filter monitoring ------------------- not completed
  • Bit7, test EGR system monitoring -------------------- completed

---

Resetting starts the process over again.... so now you're only 250mi since start, which when you convert it to km tells you that you still haven't had a regen (aka the requirement as per document linked).... so keep driving until one takes place.... maybe do some less optimal driving or manually trigger one since you're loads aren't high enough to trigger one yet.

As you can see, your last regen was prior to those 250mi you're racked up since the reset.

I'm at 1,000km now without another regen, which included 40mins of driving 60mph in 5th gear, and 30mins of driving 60mph in 4th gear. Trying to speed this up so I fiddled around this morning and I think it may actually be possible to force a regen using VCDS (or OBDEleven) on CATA, which would be great.

If so, I will share the procedure here and in the 09 Regen Help thread if I succeed. Looking pretty promising though. Following the instructions more closely this time, I got a DPF regen "on" status and blinking glowplug light... I think my previous attempts, I hadn't met the "at least 1/4 tank of fuel" prerequisite, and didn't press pedals in the correct order (dumb me).

Since both 89/4 bit 0 and 6 are DPF related, if I can force it, I should be free and clear! Might be able to report back on this later today.

 

[TurboABA]

Bit 6 has kicked my ass previously, and based on my experience is the hardest to clear....
Make sure you do this

Drive for 30km & 30min in the same cycle, minimum 30 sec. at 3000 rpm in 4th-5 th gear

 

[TurboABA]

Since both 89/4 bit 0 and 6 are DPF related, if I can force it, I should be free and clear!

Read the document carefully.... you're looking at a subcategory.... so if you're cherry-picking (2c) from there, you'll still need to get through the rest... always go for the (2a) to speed things up

The column “MVB 86 Ok = 1” describes the readiness “subcategory”. This bit = 1 after the “category” has been tested. The “subcategories” no longer need to be tested when the “readiness category” bit for the particular “subcategory” has already been set.

 

[JonA]

Bit 6 has kicked my ass previously, and based on my experience is the hardest to clear....
Make sure you do this

Drive for 30km & 30min in the same cycle, minimum 30 sec. at 3000 rpm in 4th-5 th gear

Ahhhh, this would be why my previous test drives in 4th/5th wouldn't have done the trick, I did not run it up to 3k rpm in 4th/5th. It's all making sense now...

Read the document carefully.... you're looking at a subcategory.... so if you're cherry-picking (2c) from there, you'll still need to get through the rest... always go for the (2a) to speed things up

Appreciate the tip. Will take a lunch time drive for some type 2(a) fun.

 

[JonA]

Oxidation catalyst readiness is SET after lunch time drive! I was able to, in one drive, go 20mi (~30km), drive at least 30 seconds in 4th at 3k rpm, get EGTs up to 575°C, drive for 150 seconds after hitting 575, pull over, idle for a minute, and it was set... DPF regen also ran, showing 0km since last regen but PM still not completed. Will give procedures another shot this evening most likely, starting with 2a, but this is a great start. Appreciate the input TurboABA.

 

[TurboABA]

but PM still not completed

I warned you!
Make sure you do 30min + 30km + 30s in 4th @3k or you will fail that monitor..... that one isn't "easy" to pass.

 

[JonA]

Attempted my 3rd cycle of 30min/30k/30s in 4th @3k just now but no joy... MVB 89/4 bit 6 is still 1. I'm wondering if it was too cool out for EGTs to get up to where they need to be? But in MVB 86/1-4, all bits are 1, which according to this doc means all monitors were tested:

The column “MVB 86 Ok = 1” describes the readiness “subcategory”. This bit = 1 after the “category” has been tested. The “subcategories” no longer need to be tested when the “readiness category” bit for the particular “subcategory” has already been set.

And yet still no PM readiness. I think tomorrow, when it's warmer out, I'll attempt the DPF regen following the procedure in the TSB ("start adaptation channel 13" etc...) and try to hit all procedures from 2a-2c again. More specifically, I think I'll try 2a, 2a, regen, 2b, 2c, since after the first two 2a procedures, 2b starts with "DPF regeneration and drive," then 2c ends with "DPF regeneration until the light goes out." Maybe a model year difference, but I didn't have any light come on when it regened earlier, so I'm hoping if I start the regen using the adaptation (rather than the emergency regen in basic settings), it'll be happy.

 

[TurboABA]

One sec here.... so, what caused all this to start? Why were you ever looking into readiness status?

 

[JonA]

Bought the car, registered it, didn't inspect because there were issues I needed to fix, then after fixing cleared DTCs and of course to get it inspected now need readiness set.

 

[TurboABA]

Quick rundown of fixed issue?

 

[JonA]

I took it by for inspection a little after I bought it and unfortunately I don't remember why it didn't pass. I might've actually just forgotten my registration that day. Then the P164B cropped up and I went down the rabbit hole with that issue, then cleared everything.

 

[TurboABA]

Have you logged the PM sensor? Does it play along?

 

[TurboABA]

Just a second.... you have a CATA... I don't even think you have a PM sensor on that.... epic fail!

 

[JonA]

I haven't, didn't know that was an option... having trouble finding the MVB, what channel is it?

It's not the same as DPF values is it? MVB 104 looks good, regeneration did reduce the calculated/actual soot values and reset the counter (regened yesterday and at the end of the day counter was up to about ~100km since regen).

Haven't really looked at / logged DPF differential pressure as I'm not really familiar with what the values should be, but I'll check that, might as well.

 

[TurboABA]

The struggle is real.
We have a few issues here..... the main one is, you're not using VCDS and I don't know eff all about that other garbage you're using.
I don't know what protocol your controller is using, but since you keep saying MVB, I'll assume it's CAN not UDS.
So, IF all that is correct, I don't know what the MVBs to look at are. Doesn't your tool have some search function?

Lastly, can you confirm (or at least verify that what this tool claims is supported on your setup actually exists) that you have a PM sensor?
I really don't believe you do. (which goes back to the garbage remark above) Why is this thing saying that PM monitor is a thing on your setup?

 

[JonA]

Hmmm... based on readiness bits, PM monitoring is supported... I'm going to do some more fiddling and I'll update with what I find out...

That said, how do you log PM with VCDS? Couldn't find info on ross-tech forums but I'm probably just not searching for the right thing.

 

[TurboABA]

That said, how do you log PM

You need a PM sensor first and foremost.....

 

[TurboABA]

On mine

IDE07986  Particle sensor: soot volume in exhaust

 

[JonA]

On mine

IDE07986  Particle sensor: soot volume in exhaust

Perfect, thank you! Just what I needed, after an exhaustive search I found no values that match this so I think you're right, no PM sensor. It seems the inspector agrees, as he passed the car. The ordeal is over. I was thrown by the fact it is supposedly supported, but whatever.

I might check it again in a few weeks/months just for laughs, but this is my partner's car and she's been dying to drive it (and I've been dying to not spend $50 to fill the tank halfway every couple days). Looking forward to focusing on my Golf again!

 

[TurboABA]

The ordeal is over.