There was a recall on the IP because of an ABS warning communications issue. You might want to see if it has been done yet. If not when you return it to Actia you will probably get a new (or re-flashed IP from a previous submission) which will give you a good display.
This is the recall number ind info on it.
50402-C
Defect Summary: CERTAIN CLASS A MOTOR HOMES BUILT ON WORKHORSE CHASSIS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD (FMVSS) NO. 101, "CONTROLS AND DISPLAY" AND STANDARD NO. 105 "HYDRAULIC AND ELECTRIC BRAKE SYSTEMS." MODELS WITH ACTIA INSTRUMENT CLUSTER, THE INCORRECT SOFTWARE PROGRAMMED INTO THE CLUSTER SUCH THAT CERTAIN WARNINGS ARE NOT DISPLAYED.
Consequence Summary: INCORRECT SOFTWARE MAY NOT HAVE THE ABILITY TO ILLUMINATE WARNING LAMPS INDICATING BRAKE SYSTEM FAILURES. THE STANDARDS REQUIRE DRIVER WARNING WHEN BRAKE FAILURE CODES ARE SET.
Corrective Summary: WORKHORSE IS CONDUCTING THE OWNER NOTIFICATION AND REMEDY FOR THIS CAMPAIGN. OWNERS MAY CONTACT WORKHORSE AT 1-877-294-6773 .
Here is info on exchanging the IP if you remove it yourself
HERE
You can download a manual for the IP
HERE
There are a couple of other things you may see with your IP.
1) Oil pressure can indicate zero and warning buzzer sounds when eng rpm exceeds 4550/4600 rpm. (50 rpm buffer problem)
2) Gas gauge can indicate zero and warning buzzer can indicate zero when gas sloshes because of lack of buffering of data.
3) Ave mpg can go to 100 mpg when ave mpg drops below about 4mpg. Data table not large enough.