Backup Sensors - Ford Powerstroke Diesel Forum
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Old 11-21-2013, 10:07 AM
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Backup Sensors

Anyone else have an issue with their backup sensors being overly sensitive? Mine beeps at me any time I put the truck in reverse. I've cleaned the sensors to verify there isn't trash setting them off but still have the same sensitivity. The dealer says it's normal but my 06 never beeped constant in reverse.
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Old 11-21-2013, 04:23 PM
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Mine do it on my '09. It was actually a bad sensor that needed to be replaced. I now have two bad sensors and decided to say fu(k it as the sensors are expensive and seem to go out quite often. I was quoted $500 for parts and labor to install two new sensors in addition to the hour shop rate to diagnose the problem.
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Old 11-21-2013, 04:47 PM
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I had this issue last spring and it is NOT normal!!! My dealer could not duplicate the issue and the Ford tech line said to replace the PAM but it didn't fix the false beeping.

I luckily have some "friends" in upper management at the Kentucky Truck Plant and their answer was:

"99% of the time, a FALSE tone with nothing behind the unit is a SENSOR issue. 50% of the time, they are just dirty or ICE. Our sensors DO NOT LIKE ICE. The KEY thing here is to capture the truck exhibiting the concern and monitor the PIDS using the diagnostic tool (any Ford Dealer will have this). They will need to pull up the PIDS for the PAM module and monitor the rear sensors, the PID values are: LR_CNRD, LR_CTRD, RR_CNRD, RR_CTRD."

"A GOOD reading will read 100in with NOTHING behind the unit. But, if you can capture the beep while nothing is behind the unit, you will most likely see ONE of these values go anywhere from 0-40 in.
The sensor that is bad should be changed.

LR_CNRD – Left Rear Corner
LR_CTRD – Left Rear Center
RR_CNRD – Right Rear corner
RR_CTRD – Right Rear center

If you can’t repeat it, I would suggest all 4 sensors be replaced."


They sent 4 new tested sensors to my dealer FEDX overnite and the problem never came back .
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Old 11-25-2013, 10:18 AM
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greygearhead,
Thanks for the info brother. I am taking the truck in today for a faulty tire pressure sensor and I will ask about this.
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Old 11-26-2013, 06:55 AM
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So I had to basically force the dealer to test my backup sensors and they found the two inner sensors were bad. Replaced the sensors and now it works great.
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Old 11-26-2013, 07:52 AM
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Ah, the power of the internet. Knowledge is POWER! Glad they decided to see it your way!
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