Maxbotix not working with pixhawk 4 mini

Has anybody got the Maxbotix I2C range finder working with Pixhawk 4 mini
I have tried the standard settings RNGFND_TYPE set to 2
but get 0 for the sonar range.
The same maxbotix unit works on my other copter which has a Holybro F7 controller.
It seems there is something different on the mini.
I have tried it with multiple firmware’s.
At powerup there is activity on the I2c bus but not at the maxbotix address so it seems its not being looked for

I have a similar problem
i use pixhawk 4 mini with sf20 rangefinder,
Through i2c b bus, but can’t read range.
i use copter 3.6.7 firmware.