HELP Exhaust Pressure Sensor 1 (G450): Signal too High

[gldgti]

good info jazd and great job logging some data for us all to look at.

how many pins has the sensor?

[jazd]

good info jazd and great job logging some data for us all to look at.

how many pins has the sensor?

It has 3 pins, +5V, Earth and Signal.

Well guys I swapped out the sensor before I left work and entered the new code I found (see new thread) into Coding II and it seems like I am all good. I logged some parameters the whole drive home and it looks good. Soot level dropped from 20% to 5% within minutes and further went down to 0% during the drive home. DPF light went off on dash within minutes too. Failed regen counter went to 0. Started driving perfectly again. I'll post the log tomorrow.

My car was doing really funny thing when it was doing forced regens, most noticeably the gear shifts were really wacky. Especially when downshifting, say I was holding 2000 rpm in 5th and downshifted, the revs dropped to about 1500rpm for a second then shot back up to say 3000rpm. Its like the clutch/s was being disengaged for far too long and the rev matching wasn't working. I wonder if it is just because my tune (Superchips Bluefin) doesn't play nice with regens. I certainly wouldn't have been happy if my stock car did that every month or so.

Graph after new sensor installed, stupidly didn't log RPM

[bmwrider]

Hi Jazd
It looks like I'm having a similar problem with an 2007 GT sport with 44,000 km's on the the clock, whats imvolved
with the recoding once you put the new sensor back in. My local VW dealer says it takes about 2 hours, I'm worried
they will wipe my custom code software if they get hold of it.
Please any help would be appreciated

Regards Kerry

[Transporter]

Hi Jazd
It looks like I'm having a similar problem with an 2007 GT sport with 44,000 km's on the the clock, whats imvolved
with the recoding once you put the new sensor back in. My local VW dealer says it takes about 2 hours, I'm worried
they will wipe my custom code software if they get hold of it.
Please any help would be appreciated

Regards Kerry

Any good VW independent specialist should be able to help you with replacing/adapting a new sensor. Particle/soot loading needs to be checked before attempting the regeneration.

However, I doubt that the dealer would spend more time with your car than he would get paid for and reprogrammed your ECU.

[h100vw]

Hi Jazd
It looks like I'm having a similar problem with an 2007 GT sport with 44,000 km's on the the clock, whats imvolved
with the recoding once you put the new sensor back in. My local VW dealer says it takes about 2 hours, I'm worried
they will wipe my custom code software if they get hold of it.
Please any help would be appreciated

Regards Kerry

If they managed to do that, it doesn't cost to put your tune back.

I did one of those sensors and checked it out in less than half an hour.

Can Matt not do it for you?

Gavin

[Umai Naa!!]

Some cars require a regeneration as part of the adaptation. Most don't.

The dealer is right to over-guess the amount of time needed, rather than come up short.

[jazd]

Yeh its a half hour job and you just need to do an adaptation not a forced regeneration.

[Umai Naa!!]

You can do the adaption yourself. Key on, key off three times.

[Transporter]

For that to be sure you need to check the dpf loading.

Sent from my GT-N7000 using Tapatalk 2

[bmwrider]

Thanks for all the info everyone, I'v purchased the sensor all I have to do is install it and see where we go from there