4 fault codes on my LCR - what is the problem? Now with Logs

[DannyC87]

Hi Guys;
I have just vagcommed my LCR after having some limp-mode issues every once in a while. The fault codes are:

16486 P0102 Mass or Volume Air Flow Circ Low Input
17863 P1455 Exhaust gas temperature sensor 1 range/performance
17963 P1555 Charge Pressure Upper Limit exceeded
18010 P1602 Power Supply (B+) Terminal 30 Low Voltage

Can anyone tell me possible problems; things to change etc? and how do I reset the codes to see if they come back again? I think the 17963 will have been immediately after my remap when I was seeing spikes of 28psi boost - since then I have replaced the n75 and installed a MBC to run in parallel with the n75 to limit spikes to 24psi (suggested on mkiv forums).

Any help would be great.

Thanks
Dan

 

[DannyC87]

ok, looking on the ross tech wiki site; i think 17863 and 17963 are due to the boost spikes i was experiencing, but that problems is solved now, so if reset they shouldn't return.
16486; could this be caused by driving with the maf unplugged for a minute to test for dodgey maf? i unplugged the batt to clear the eml light after doing this, would this not clear the code too?

 

[DannyC87]

bump

 

[BeartheBruce]

Most codes will only clear when done by a scan tool. Obviously you have access to one. Clear the codes and see what returns.

 

[DannyC87]

just cleared the codes; only 17963 returning; just logged actual versus requested boost. Actual spikes above requested initially, then falls below, and then rises above it again; i'll post my logs up in a bit. Cheers

 

[DannyC87]

Tuesday 27 January 2009 12:47:30

Group A: '002
RPM Load Inj. On Time Mass Flow
TIME
Marker STAMP /min % ms g/s
0.91 1640 85 7.48 28.78
2.22 2120 117.3 9.52 53.03
3.54 2800 180.5 14.28 111.36
4.75 3760 191.7 20.4 180.81
6.05 4720 191.7 18.7 200.53
7.26 5560 191.7 16.32 207.92
8.56 6120 185 15.3 216.36
9.79 6560 178.2 15.64 216.67
11.08 6680 31.6 2.04 5.28

Group B: '115
RPM Load Absolute Pres. Absolute Pres.
TIME
STAMP /min % mbar mbar
0 1440 24.8 1000 990
1.31 1760 93.2 1900 1130
2.62 2320 130.8 2330 1470
3.93 3080 191.7 2360 2420
5.25 4120 191.7 2380 2540
6.45 5000 191.7 2310 2280
7.66 5720 191.7 2250 2140
8.97 6280 182.7 2100 2100
10.28 6720 156.4 1930 2240

Group C: '008
Bin. Bits Absolute Pres. Bin. Bits
TIME
STAMP mbar
0.42 Not Oper. 105
1.73 Not Oper. 105
3.04 Not Oper. 105
4.34 Not Oper. 105
5.65 Not Oper. 105
6.86 Not Oper. 105
8.16 Not Oper. 105
9.37 Not Oper. 105
10.68 Not Oper. 105

How can I post logs in a decent format?

 

[DannyC87]

only a 3rd gear run, perhaps i should do one in forth?