Rear park aid error code B1B52 rear sounder

[RCT_SHO]

First post. Thanks for the helpful information I had read so far.

My Rear park aid disabled. Need help.

'Check rear park aid' error message on my dash. I listened to each of the sensors on the rear bumper and they are all clicking. There is no sound from the park aid speaker. I read the error code on the "Forscan" app on my iPhone using the ELM327. Here is the code: B1B52 - Rear Sounder
Additional Fault Symptom: Circuit short to ground or open
Modulearking Aid Module

Any help is greatly appreciated. I'm thinking it's the speaker or a wire harness.

 

[SHOdded]

Welcome to EBPF!  Very likely wiring.  If you pull the connectors apart, you may find rust built up in there.  So cleaning them out and giving them a bath in dielectric grease before reconnecting could be just the ticket.

 

[RCT_SHO]

Thanks. To clarify, would that be the connectors by the parking aid module and or under the rear bumper?

 

[SHOdded]

Under the rear bumper.

 

[curry67]

Likely a faulty sensor ive had mine replaced twice. Is covered on ford extended warranty.