2016 transit 2.2 electrical issues

[Kitt1969]

Hi people.

I have a 2016 2.2 TDCI LWB RECOVERY TRUCK.

Yesterday the Speedo stopped working , airbag light came on along with the red handbrake light.

Also interior light has stopped working and it won’t accelerate over 3000rpm.

Also 4 weeks ago the drivers rear side light stopped working. Checked bulb and light unit and connector all ok.

Can anyone on here help diagnose ?

Autel MX900 found no fault codes.

Cheers


George

[metalworker0]

does your Autel MX900 give voltage readings

should be over 12.5 ..preferably 12.7 with engine stopped
should be over 13.5 running

low voltage in the system either from bad batteries , bad alternator or bad earths and terminals can cause the electronics to go erratic

all the best.mark