Traded for a Beetle in Limp mode

P0638 Volkswagen Throttle Actuator Control Range/Performance OBDII Engine Light Trouble Code | Engine-Codes.com

The throttle pedal assembly; was replaced? Used or new part? A hard reset; after the throttle replacement, might be a good idea.

In the above new trouble code; they are mentioning cleaning and adapting the throttle body, have you tried that?

You scanner; seems to be VW compatible but your saying, it won't work in "vw mode"? Maybe look for a update; on their website or contact their tech support? As with many of these Chinese scan tools; you milage may vary and they don't always work as advertised.

Super Memo Scanner for VAG AND CAN-OBD2 >>
Product Name: Super Memo Scanner for VAG AND CAN-OBD2
Part No.: U585
Net Weight: 0.8KG
1.1 Tool Description
1.LCD Display , 128*64 pixel display with contrast adjustment, Backlit
2.enter key selects displayed
3.exit key go back to the previous screens
4.up/down arrows-moves the selection pointer and scrolls up or down.
5.LEFT/RIGHT arrows-Select responses and moves cursor.
6.OBDII connector cable, connect car and the scan tool
7.Battery compartment

1.2 Product Specifications
• Display-Backlit LCD,128*64 pixel display.
• Operating Temperature- 0 to 50
• Internal Power- 9v Cell
• External Power: 10.0 to 15.5 vols provided via vehicle battery
• Update by internet
Dimensions:
• 195mm Length 81mm Width 32mm Height
• OBDII connector , 1500mm

1.3 Product Features
1.Works on all 1996 and newer cars & light trucks that are OBD II compliant (including the VPW, PWM, ISO, KWP 2000 and CAN protocols)
Reads and clears generic and manufacturer specific Diagnostic Trouble Codes (DTCs)
trouble codes display on the LCD, needn't the code book.
Scanning live data
Reading Freeze Frame Data
Testing I/M Reading Status
Reading vehicle info
Rescanning Data
2.works all VW, AUDI, SKODA, and SEAT vehicles. it can nearly do the same work as that of a VAG1551/1552. Available Functions:
Control Unit Information
Read Fault Codes
Measuring Blocks
Clear Fault Codes
Basic Setting
Adaptation
Single Reading
Output Tests
Code Module
Login
Service Oil Reset
Code Modes
Dealership Code Set
support the following systems:
Engine
Transmission
Airbag, etc.
there are 78 systems available.

VEHICLE COVERAGE:
• GM '96 - Current Year (OBD-II)
• Ford '96 - Current Year (OBD-II)
• Chrysler '96 - Current Year (OBD-II)
• Toyota '96 - Current Year (OBD-II)
• Honda '96 - Current Year (OBD-II)
• NISSAN '96 - Current Year (OBD-II)
• All other Asian and European '96 - Current Year (OBD-II)
• All new CAN protocol cars.
• All VW/AUDI cars.

They are listing; a downloadable software update from 2002, version 5.1; on their site here:

Memoscan.cn

Their tech support is listed as:

Contact Us
Company:MemoScan Technology Co., Ltd.
EMAIL: [email protected]

It looks like; they have a newer version the VAG505:

Memoscan.cn

PO638 has only shown up today after the scan.

Pedal assembly replaced new. Did a hard reset and ran fine for 2 months. MAF failed. Replaced with new and thats when the 121 221 codes started showing back up. Reset this morning and drove 15 miles. Shut off at a station and CEL came back.

Throttle body is clean. Tried the adaptation with a Snap On scanner. Didn't help.

Scanner I have, worked on previous 05 Beetle we had. Lost update cable somewhere. Found one online but have to order from HONG KONG.

VAG-COM VCDS 2015 - OBD2 Diagnostic Cable & Software (for VAG Cars: VW, AUDI, SEAT, SKODA)

This cable claims to use rosstech software and is not too expensive,if it works.

Well, that is a hacked/pirated version of the Ross Tech VCDS (they have copied the chip/software in the cable); they seem to be deliberately pirating the genuine Ross Tech VCDS product and offering support only through them. I choose to support Ross Tech; while it costs more, the support (an actual human on the phone/specific online forums for registered users), free updates forever and sustaining/supporting the actual creators of the product in the future, is worth the investment imho. VCDS paid for itself; the first time I used it, repairing a airbag problem. I have never regretted my genuine Ross Tech VCDS purchase; I am a user since 2007 and my car, would not be on the road today without it!

Other options are VW scan tools sold on amazon (vag405/vas450/vag401 or Foxwll NT500) or a basic ELM327 wireless OBD II adapter with a auto diagnostic app.

It is interesting to note; that AFTER you replaced the MAF those trouble codes were coming back. What part number and brand of MAF did you replace the original one with? We have seen; all kinds of problems with aftermarket MAFs with those, other than the oem Bosch versions that came with our cars from the Volkswagen factory.

You can search the correct Bosch parts for your car here:

https://www.boschautoparts.com/auto

hillbilly4u said:

Don't want a hacked version. On the Ross Tech site, they offer a Lite version to work with 3rd party cables. Thought the link may have been one.

Will any of the Amazon units do a TBA?

Part # was 0280218060 at Parts Geek. $105 shipped.

Click to expand...

Some some they do; I think the VAG401 and Foxwell NT500 claim this capability (there are others). Again, I haven't used any of those but I have used a genuine full version of VCDS to do a TBA.

If you don't have access; to a vw scan tool to do the TBA; you might clean the MAF and turn the key to the "on" position (no start) and wait a couple of minutes, until the noises from the throttle body stop. This is considered; to a be "poor mans TBA", many debate whether it is the same between that and doing it through a tool like VCDS.

Based upon the Bosch parts finder; it looks like you purchased the correct MAF.

https://www.boschautoparts.com/auto/air-management-sensors/mass-airflow-sensors?partId=0280218060

VCDS Lite; has limitations, if you can afford it I recommend the full version cable/software. Buying and using a scan tool; depends on what you want to repair on your car and what your needs are. A cheap ELM327 and a app for you phone or tablet, can do allot for live data type diagnosis and basic obd II trouble codes.

http://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias=automotive&field-keywords=elm+327

More in depth features; that are VW specific are covered by VCDS (e.g. coding, output tests, Airbag, ABS, etc.)

http://www.ross-tech.com/vcds-lite/

http://www.ross-tech.com/vag-com/vag-functions.html

This is a response from vcds tech support: "The registered version of the software is capable of doing a Throttle Body Alignment provided there are no issues with the vehicle." (with non can bus vehicles).

Be sure to follow the procedures and that the requirements are met:

There are certain test conditions that must be met before doing a TBA:
No DTC's in the Engine Controller
Battery voltage at least 11.5 V
Throttle must be at idling position (keep your foot off the gas pedal)
Throttle body part must not be dirty (carbonized).
Coolant temperature must be between 5 and 95C
If fault codes were cleared cycle the ignition off and back on prior to running Basic Settings.

http://wiki.ross-tech.com/wiki/index.php/Throttle_Body_Alignment_(TBA)


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