Well, the F150 is 5.5 years old and Gremlins have decided to invade. Earlier this year it was critters eating some wires in the main wiring harness, that shut the truck down for 8 weeks and now the rear park aid has decided to quit on me, get message - check rear park aid. Initial diagnosis is a bad sensor or sensors. Went thru the settings menu and the Rear Park Aid is unchecked and will not enable. Unplugged all 4 sensors and re-plugged them, no help. Looks like I'll be replacing some sensors and keep fingers crossed that solves the issue.

 

There are many DTCs for the parking aids. You need to check for DTCs with FORScan or other advanced diagnostic tool. A cheap generic reader will not likely read these DTCs.

 

Did replacing your sensors fix the issue? I started getting the same Rear Park Aid message earlier this week.

 

I replaced all four sensors,put dielectric grease on all connectors including the main one above the spare tire. Nothing worked . I’m frustrated

 

I’m getting the above (subject line) code on my FIXD app OBD reader. However, I DON’T have rear parking aids such as sensors that beep when reversing and so on.

Any suggestions on what to look at or do???

Ive attached a screenshot of the code readout.