How to fix KT200II not write VW pcr2.1?

Byadmin

Dec 13, 2024 KT200II Test Reports

This article begins with one ECUHELP KT200II user’s question “I have problem with pcr2.1 writing, it doesn’t work”.

Please look at the following images which show how to connect PCR2.1 to KT200II on Bench, as well as the writing failure demonstration.
How to fix KT200II not write VW pcr2.1-01

Advice from the experienced users:
1.Power supply: 13.5V minimum, someone use 14v – 14.5v.
2. Unlock by OBD works ok, but Bench is better. Read EEPROM, then write back EEPROM. KT200II will ask if you want to unlock for programming, click on “yes” and all will be fine.

3. Do full backup
Then write EEPROM and unlock
Then I do a full read again
Then mod map and write

It took a bit long to write but never failed.

Refer to the following article:
1.KT200 PCR2.1 read password, Boot read ecu and unlock eeprom

2. Tips of using KT200II to unlock PCR2.1 via OBD / Bench

Any question, please message Oliver WhatsApp:+8618205996549.