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9 Posts
Discussion Starter · #1 ·
Anyone use a Scan Gauge II in their Tiguan? just wondering if anyone has any programming key codes for it?

I have one just sitting here doing nothing. I had it for my 6.0 Powerstroke diesel to monitor all my engine parameters, but I got rid of it the last time it blew up.

They are nice, show a lot of info.

28 Posts
Yep, have had one in my 2012 SEL for several years now, works well. There are a few programming guides out there on the net, here's some to get you started

I know it's an old thread, and on a Tiguan (is that a van?) forum to boot, but I thought the info below, together with the instructions provided by ScanGauge, might help some people to figure things out.

Step 1: Figuring out which OBD PID variables are supported on your car:
Using the 'CMNDS' feature of the ScanGauge, you can read a bit map of supported OBD fields:
1. Send '0100','0120','0140', and convert the hex number in the answer to binary, e.g. using Each '1' in the answer corresponds to a PID that is supported. '0100' gives you the map for PIDs 01 to 20, '0120' for 21 to 2F, etc..
2. Look up the PID meanings on wikipedia:
Step 2: Test each PID you are interested in using 'CMNDS':
Send '01xx', with xx being the PID number in hex from above.
1. IF you get an answer for your query, i.e. one that does start with '41xx' , then the reply was a single-frame field, and you can write an Xgauge following the standard instructions, i.e. TXD 07DF01xx RXF 044105xx'.
2. IF you do not get an answer, the reply is probably in multi-frame format (or you misread your PID bitmap, or your car is lying...), and you have to shift your reply filter by one byte to the right: 'TXD 07DF01xx RXF 054106xx'
Step 3: Using the info in the wikipedia OBD entry, and trial and error, figure out the correct bit fields in your answer (RXD field), and the unit conversion that goes with it (MTH field).
Often there is more than one variable per PID.

Examples that work on my 2012 JSW TDI:
TXD is 07DF01+PID
name PID RXF RXD MTH units comment
TIM 1F 0441051F 2810 000100010000 s seconds since engine start
BAR 33 04410533 2808 000100010000 kPa atmospheric pressure
CAT 3C 0441053C 2810 0001000AFFD8 ºC DPF temperature
FUF 5E 0441455E 2810 000500010000 L/hr fuel flow
TRQ 62 04410562 2808 00010001FF83 % percent of actual torque
BP1 70 05414670 3810 0001001E0000 bar requested manifold pressure ('4670' for hundredth
BP2 70 05414670 4810 0001001E0000 bar actual manifold pressure
BP1 70 05418670 3810 00910BB80000 psi requested manifold pressure ('8670' for tenth
BP2 70 05418670 4810 00910BB80000 psi actual manifold pressure
EPR 73 04410573 3010 000100010000 0.1mBar DPF differential pressure
ICT 77 04410577 3008 0001000AFFD8 ºC intercooler/charge air temperature
ET1 78 05410678 3810 0001000AFFD8 ºC exhaust temp. before turbo
ET2 78 05410678 4810 0001000AFFD8 ºC exhaust temp. before
ET3 78 0321 2010 0001000AFFD8 ºC exhaust temp. before DPF
ET4 78 0321 3010 0001000AFFD8 ºC exhaust temp. after DPF

DPL 7A 0541067A 3810 000100010000 ?? DPF soot load ?
FPa 6D 0541066D 3810 0001000A0000 bar? requested fuel pressure ? (<=1755)
FPb 6D 0541066D 4810 0001000A0000 bar? Actual fuel pressure ? (<=1740)

available info on this car:
PID contents
01 Monitor status since DTCs cleared
04 Calculated engine load value
05 Engine coolant temperature
0C Engine RPM
0D Vehicle speed
10 MAF air flow rate
13 Oxygen sensors present
1C OBD standards this vehicle conforms to
1F Run time since engine start
21 Distance traveled with malfunction indicator lamp (MIL) on
24 O2S1_WR_lambda(1): Equivalence Ratio Voltage
25 O2S2_WR_lambda(1): Equivalence Ratio Voltage
30 # of warm-ups since codes cleared
31 Distance traveled since codes cleared
33 Barometric pressure
3C Catalyst Temperature Bank 1, Sensor 1
41 Monitor status this drive cycle
42 Control module voltage
46 Ambient air temperature
49 Accelerator pedal position D
4A Accelerator pedal position E
4C Commanded throttle actuator
4F Maximum value for equivalence ratio, oxygen sensor voltage, oxygen sensor current, and intake manifold absolute pressure
5D Fuel injection timing
5E Engine fuel rate
61 Driver's demand engine - percent torque
62 Actual engine - percent torque
63 Engine reference torque
65 Auxiliary input / output supported
67 Engine coolant temperature
69 Commanded EGR and EGR Error
6D Fuel pressure control system
70 Boost pressure control
71 Variable Geometry turbo (VGT) control
73 Exhaust pressure
77 Charge air cooler temperature (CACT)
78 Exhaust Gas temperature (EGT) Bank 1
7A Diesel particulate filter (DPF)
7F Engine run time
81 Engine run time for Auxiliary Emissions Control Device(AECD)



There's a whole Scangauge forum where people submit codes although (a) it hasn't been updated in a while, and (b) your Tig may not support them. For example, I could not get BOOST to display with my Tig.

Also, I found the easiest way to "mount" the Scangauge was to lower the steering wheel adjustment, stick the Scangauge under the dash trim, and slowly raise the steering wheel until it's a firm fit. Other methods I tried (like Velcro) are sub-optimal, especially in SoCal.

9 Posts
Discussion Starter · #3 ·
Thanks for the info. I'll have to set it up some day when I'm bored. I have everything in it for the 6.0 Powerstroke but I no longer have that truck, so I'll use it in my Tiguan. I'll just clear all the PS codes out.
It's a lot of work setting them up, but they work nice. They provide a lot of info, especially on these newer vehicles now that they don't put gauges in them anymore.

28 Posts
Since the mileage info displayed on my MFD is..err..."optimistic" (gee, VW wouldn't screw with the software, would they... WOULD THEY ??) and the scangauge tracks fill-up data almost perfectly, I have mine setup to display (1) Distance to empty, (2) Average gas mileage this tank, (3) instantaneous MPG, and (4) Average mpg this trip (resets when ignition is turned off).
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