Need help with some DTCs

4.2 V8 40v biturbo - 450 bhp
4.2 V8 40v biturbo - 480 bhp (plus)
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Gav66
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Need help with some DTCs

Post by Gav66 » Tue Oct 24, 2017 8:41 pm

Well got my VCDS from Glendan... just plugged it in and had a look at what was going on which to be honest I didn't really think there would be, lo and behold I have some error codes. Any help with this would be great, had a look on Ross Tech but looking for laymen terms. I am a quick learner but just need it explained more. :bash:

Address 01: Engine Labels: 077-907-558-BCY.lbl
Part No: 4D1 907 558 F
Component: 4.2l V8/5VT *G 0001
Coding: 0010752
Shop #: WSC 79672 922 403046
VCID: 313C1DC1CD33EC5FE44-5160

3 Faults Found:
17985 - Right Engine Mount Solenoid Valve (N145)
P1577 - 004 - Open Circuit
16486 - Mass Air Flow Sensor (G70)
P0102 - 002 - Signal too Low - Intermittent
17535 - Fuel Trim; Bank 1 (Mult)
P1127 - 002 - System too Rich - Intermittent
Readiness: 0000 0101.
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bam_bam
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Re: Need help with some DTCs

Post by bam_bam » Tue Oct 24, 2017 8:57 pm

Hydrolic engine mount curcuit open. Probably needs a replacement, no biggie.
Clear the codes, drive around, do some WOT. Rescan.
No matter where you go, there you are.
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Gav66
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Re: Need help with some DTCs

Post by Gav66 » Tue Oct 24, 2017 9:07 pm

Cheers bam_bam, so this regulates the stiffness of the mount ?
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jockthedog
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Re: Need help with some DTCs

Post by jockthedog » Tue Oct 24, 2017 9:13 pm

MAF is a common issue, and could easily produce the 3rd error too. Easy fix, if not that cheap.
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Gav66
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Re: Need help with some DTCs

Post by Gav66 » Tue Oct 24, 2017 9:17 pm

What MAF will it be as in does it tell you what side ?
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bilko1
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Re: Need help with some DTCs

Post by bilko1 » Wed Oct 25, 2017 11:10 am

Just change them as a pair, I've just done mine got them from TPS for £160 exchange the pair. Could of got them slightly cheaper online but I've been burnt before with dodgy MAFs.
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Re: Need help with some DTCs

Post by Shoppinit » Wed Oct 25, 2017 11:19 am

Don't forget he recently had issues with lumpy running after airbox wasn't fitted correctly. These DTC could be from that and there might be nothing wrong with the MAFs. Do what bam said and clear the faults and see what comes back.
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Shoppinit
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Re: Need help with some DTCs

Post by Shoppinit » Sat Oct 28, 2017 8:56 am

bam_bam wrote: ↑
Tue Oct 24, 2017 8:57 pm
 Hydrolic engine mount curcuit open.
*Hydraulic
*circuit
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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Gav66
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Re: Need help with some DTCs

Post by Gav66 » Sun Oct 29, 2017 11:08 am

Cheers lads thanks for your time, I will give it a run then clear the codes and see what happens.
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Shoppinit
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Re: Need help with some DTCs

Post by Shoppinit » Sun Oct 29, 2017 11:18 am

Clear the codes then go for a run.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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Gav66
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Re: Need help with some DTCs

Post by Gav66 » Sun Oct 29, 2017 1:31 pm

Cleared codes then went for a run...lol cheers Shopp, just the engine mount one still there. This mite sound stupid but when my car had it's service and came up with the warning lights on, could the mechanic have switched the remap off ? Was remapped by previous owner, gearbox aswell and when I purchased it he said the maps could be switched on and off. Now I've had a chance to drive it it seems like the box is changing gears up and down differently. The battery was changed during the service could this just be the gearbox learning my style of driving, sorry if that sound stupid. Could he have switched the maps off ??
Definitely higher revs before changing and changing down a lot quicker.

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Shoppinit
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Re: Need help with some DTCs

Post by Shoppinit » Sun Oct 29, 2017 4:44 pm

ECU, yes. There are some maps that are switchable with various switch combos. Not TCU though. If you are seeing different gearbox behaviour then that's weird.

It's more likely that your boots are heavier now. :)
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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Gav66
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Re: Need help with some DTCs

Post by Gav66 » Sun Oct 29, 2017 6:34 pm

Thanks for putting mind at ease. Need to stop looking for problems 😊
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simonpoulton
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Re: Need help with some DTCs

Post by simonpoulton » Mon Oct 30, 2017 5:20 pm

The MAF sensors input data into the ECU and the engine load calc is derived from that data I think. Then the engine load calc will be used by the TCU on shift characteristics. So could it be that when the airbox had been refitted properly, the load calc for the engine was more accurate, and then the shifts changed accordingly.
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Gav66
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Re: Need help with some DTCs

Post by Gav66 » Sun Nov 05, 2017 1:13 pm

Just been looking through ross tech wiki and found that if the battery has been disconnected or replaced that you should reset the kick down settings again.
Anyone done this and could this be why my box is different to what it was ?
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