Most connection issues, like the "Serial Port Latency Too High" error, are resolved by adjusting these specific settings: Interface Type: In the MultiECUScan settings (accessible via ELM 327 1.3/1.4 or higher under the "Interfaces" tab. Baud Rate (Communication Speed): Set this to 38,400 bps
This is the most common error users make. multiecuscan elm327 port settings 2021
Optimized Port Settings for MultiEcuScan and ELM327 (2021 Guide) Most connection issues, like the "Serial Port Latency
: Click the Advanced button to modify the following: Most connection issues