www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2016 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You




Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKV-A5 Golf/Jettas

VW MKV-A5 Golf/Jettas Discussions area for A5/MkV Jetta/Golf (2005/2006 PD and 2009 CR).

Reply
 
Thread Tools
Old August 11th, 2017, 12:22   #1
redbaron58p
Member
 
Join Date: Jul 2009
Location: Seattle (GranolaVille)
Angry Never-Ending P0122

This code just won't go away on my 06 Jetta

Things we've done so far:

-Replaced the pedal switch
-Found and repaired damaged wiring harness between pedal switch and ECU
-Checked all 6 connections between pedal switch and ECU to be good

I'm really at a loss here. We replaced the entire cable run from the pedal to within 3 inches of the ECU, and all leads test perfect. Original pedal switch wasn't even bad. This can't possibly be so complicated...
redbaron58p is offline   Reply With Quote
Old August 11th, 2017, 13:01   #2
oilhammer
Certified Volkswagen Nut Vendor
 
oilhammer's Avatar
 
Join Date: Dec 2001
Location: St Louis
Fuel Economy: fantastic
Default

Alldata does not show a P0122 for (what I am assuming) a BRM A5 Jetta sedan.

What component call out does VCDS show for this DTC? G79? G185?

Which pedal?
__________________
oilhammer
www.cardocautomotive.com
oilhammer is offline   Reply With Quote
Old August 11th, 2017, 15:54   #3
redbaron58p
Member
 
Join Date: Jul 2009
Location: Seattle (GranolaVille)
Default

My Alldata show it as VAG 16506 "throttle/pedal position sensor/witch "A" circuit low.
TP sensor G7p / Accellerator pedal position sendor 2 G185, checking:
(then it tells you to check pins 1 and 5, 2 and 3 for at least 4.5v)
I did so, and that's when I discovered the wiring harness was damaged somewhere between the connector and the ECU. This was after I replaced the actual pedal sensor. I then created a new cable with a new connector and spliced it into the ECU harness.
I don't have VAG-COM, so the only thing I can tell you is that before replacing the harness, the throttle output reading on my regular OBD reader was always pegged at 94 percent, regardless of pedal position or the car running. Now it doesn't do that, but I still have the P0122 code.
I'm thinking there must be somewhere else that this is triggered, but I'm at a loss.
redbaron58p is offline   Reply With Quote
Old August 12th, 2017, 05:01   #4
oilhammer
Certified Volkswagen Nut Vendor
 
oilhammer's Avatar
 
Join Date: Dec 2001
Location: St Louis
Fuel Economy: fantastic
Default

Yeah...you need a better scan tool.
__________________
oilhammer
www.cardocautomotive.com
oilhammer is offline   Reply With Quote
Old August 12th, 2017, 21:52   #5
redbaron58p
Member
 
Join Date: Jul 2009
Location: Seattle (GranolaVille)
Default

Yep. Like the VAG I bought a few years back that worked great on my ALH cars, but not on this one Don't worry they say, we'll make you a special deal to "upgrade" to one that you can only use on 3 cars ever.

I just discovered this new thing they're doing. Is anyone happy about this?
redbaron58p is offline   Reply With Quote
Old August 14th, 2017, 04:43   #6
oilhammer
Certified Volkswagen Nut Vendor
 
oilhammer's Avatar
 
Join Date: Dec 2001
Location: St Louis
Fuel Economy: fantastic
Default

I am using the exact same HEX+CAN USB cable now as I was 15 years ago. Not sure which version you have, but yes you may have to upgrade to a newer type.

The reason I say this (need a better scan tool) is that in some cases on some cars the generic OBD2 tool gets confused with the pedal position sensor(s) and the throttle position sensor(s) and lead you down the wrong path. Although I do not think that is necessarily what is happening here, but when you said the one value you are looking at doesn't change that makes me think you are looking at the intake flap position (which is like a throttle body, but not used on your car in the same manner it would be on a gasoline fueled car) and not the pedal position.

However you did say there was wiring damage, and that *could* lead to damage to the ECU although I highly doubt it.
__________________
oilhammer
www.cardocautomotive.com
oilhammer is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Faulty gas pedal SW? (P0122) redbaron58p VW MKV-A5 Golf/Jettas 0 August 8th, 2017 16:42
P0122 Code. New ASV didn't help. Turbo_Whistle VW MKV-A5 Golf/Jettas 4 May 8th, 2016 13:45
Ugh.. Never ending! G Men 08 VW MKIV-A4 TDIs (VE and PD) 15 August 8th, 2014 08:41
A Happy Ending Cirrus Fuels & Lubricants 0 May 27th, 2006 13:41
Never Ending Shudder TDINJ VW MKIV-A4 TDIs (VE and PD) 3 May 12th, 2003 09:16


All times are GMT -7. The time now is 19:54.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2017
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
1996 - 2017, All Rights Reserved
Page generated in 0.08322 seconds with 12 queries
[Output: 74.82 Kb. compressed to 65.58 Kb. by saving 9.24 Kb. (12.35%)]