ATH1 did not return 'OK', or echoing is still ON

[sjsyed]

I recently bought an OBD2 ELM327 V1.5 USB device.

When I connected it with my windows laptop, it works fine. I used some OBD scanner softwares and it displayed the RPM values and DTC values without any issues.

But, when I try it with python's obd library in ubuntu, I get the following error.
"ATH1 did not return 'OK', or echoing is still ON"

Following is my Debug log:
[obd.obd] Explicit port defined
[obd.elm327] Initializing ELM327: PORT=/dev/ttyUSB2 BAUD=9600 PROTOCOL=auto
[obd.elm327] write: b'ATZ\r'
[obd.elm327] wait: 1 seconds
[obd.elm327] Failed to read port
[obd.elm327] read: b'ATZ\r\r\nOK\r\n'
[obd.elm327] write: b'ATE0\r'
[obd.elm327] wait: 20 seconds
[obd.elm327] Failed to read port
[obd.elm327] read: b'ATE0\r\r\nOK\r\n'
[obd.elm327] write: b'ATH1\r'
[obd.elm327] wait: 20 seconds
[obd.elm327] Failed to read port
[obd.elm327] read: b'\r\nERROR\r\n'
[obd.elm327] closing port
[obd.elm327] write: b'ATZ\r'
[obd.elm327] ATH1 did not return 'OK', or echoing is still ON
[obd.obd] Closing connection
[obd.obd] Cannot load commands: No connection to car
[obd.obd] ===================================================================
[obd.obd] Query failed, no connection available
[obd.obd] Query failed, no connection available

I also added delay to the elm.py file. I still face this issue when accessing data using python.

I really need this to get resolved ASAP.

Thank you for any help.