DBW Throttle error

I got an error on the way up to a rodeo this weekend, and noticed this past week the clutch felt like it slipped a few times (even though it's a DSG). When I got the error, the glow plug indicator blinked, and the MFI said "service engine now" or something to that extent. Even though I could still shift gears, I wasn't getting any throttle response. I coasted to a driveway off the shoulder, turned off the car, back on after about 30 seconds, and was able to keep driving. CEL went off, but thankfully the code was stored so I could pull with VCDS when I got home.

I tried googling the error both on here and myturbodiesel, and it looks like it might be the throttle pedal assembly, but I'm not certain. Has anyone else seen this error before?

2 Faults Found:
005000 - Control Module Malfunction - DBW Throttle Monitoring
P1388 - 007 - - Intermittent
Freeze Frame:
Fault Status: 00100111
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 268595 km
Time Indication: 0
Date: 2010.11.24
Time: 20:09:53

Freeze Frame:
RPM: 3381 /min
Speed: 78.0 km/h
Voltage: 13.07 V
Voltage: 1.596 V
Voltage: 0.760 V
Torque: 290.0 Nm
Bin. Bits: 0000000

005000 - Control Module Malfunction - DBW Throttle Monitoring
P1388 - 000 - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 2
Fault Frequency: 14
Reset counter: 255
Mileage: 268595 km
Time Indication: 0
Date: 2010.11.24
Time: 20:09:53

Freeze Frame:
RPM: 3381 /min
Speed: 78.0 km/h
Load: 24.7 %
Bin. Bits: 0000000
Inj. Quantity: 0.0 mg/str
Hex Value: 0xFF00
Hex Value: 0xFF01

My Google Foo seems to think the throttle peddle assembly is the root cause of the problem.

ATR said:

My Google Foo seems to think the throttle peddle assembly is the root cause of the problem.

Click to expand...

I'm thinking the same, but there isn't much by way of information specific to Mark VI TDIs.

pkhoury said:

I'm thinking the same, but there isn't much by way of information specific to Mark VI TDIs.

Click to expand...

Yeah, from what I gather from older generations tdi's and gtis seem to point to the throttle peddle assembly. Though I didn't get into details of the threads that I've found.

You could also maybe try cleaning the throttle sensor contacts in the peddle assembly with electronic contact cleaner.

I believe that you can monitor (or log) the actual output of the accelerator pedal position sensor with VCDS. This might give you some more information.

Have Fun!

Don

P.S. I think that you can monitor it with your Polar FIS+ as well.

any resolution on this? My vcds kicked out the same codes after same symptoms.

diesel dane said:

any resolution on this? My vcds kicked out the same codes after same symptoms.

Click to expand...

Good question. I've only been driving the Golf for the last week on a 13 state road/business trip. From what little information I was able to glean, it seems that replacing the foot pedal would be the solution. Some people suggested electrical contact cleaner, but given how important the foot pedal is, I'm more inclined to just replace it.

pkhoury said:

Good question. I've only been driving the Golf for the last week on a 13 state road/business trip. From what little information I was able to glean, it seems that replacing the foot pedal would be the solution. Some people suggested electrical contact cleaner, but given how important the foot pedal is, I'm more inclined to just replace it.

Click to expand...

I suggested the contact cleaner more along the lines of a last resort.

I agree that simply replacing it would be the best fix for the problem if it's not a problem with wiring.