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by N0edL22131
Sun Jun 08, 2025 8:21 pm
Forum: General Discussion
Topic: K-line/KWP2000 Communication with Piaggio Zip – Only Echo, No ECU Response
Replies: 0
Views: 201

K-line/KWP2000 Communication with Piaggio Zip – Only Echo, No ECU Response

Hi everyone,

I’m trying to read my Piaggio Zip 4T Euro 5 ECU using an ESP32-C3 + MC33660 (K-line transceiver) , but I’m only getting my own command echoes and no real ECU response. Hoping for some expert advice!

My Setup:

MC33660 connected to ESP32-C3 (RX: GPIO20, TX: GPIO21, CEN: 3.3V).
K ...

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