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PAM Internal Component Failure

Posted: Mon May 13, 2019 8:29 am
by karlv
Hi, can any help me out I have ran a scan and I it was showing as below:

Code: B1B50 - Rear Left Inner Sens
Additional Fault Symptom:
- Component Internal Failure

Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Parking Aid Module

Freeze Frame :
-GLOBTIM: 0 sec - Global real time
-TOTDIST: 0.0 km - Total Distance
-MAINECUV: 0.00 Volt - Main ECU voltage supply
-ESTSECRK: No - Engine status - engine in crank
-ESTSERUN: No - Engine status - engine running
-INCARTMP: -40 °C - In car temperature

I replaced the Sensor with a new sensor ran the scan and then it was saying Electrical fault and all my PAM's were showing as faulty. I then ran the service procedures and cleared the DTC's ran the test again and I am now back at the start and it is showing as a 'Component Internal Failure' rear left sensor I have checked the wiring for the rear left sensor and all looks fine. I have checked the connections to the module and all are seated correctly. Can anyone help me out this is driving me crazy!

Re: PAM Internal Component Failure

Posted: Mon May 13, 2019 7:02 pm
by denbo
Take that sensor back out and do a scan. Its possible the module don,t like it. Where did you buy it?

Re: PAM Internal Component Failure

Posted: Mon May 20, 2019 7:49 am
by karlv
Hi Denbo, when I take that sensor out and run the scan I get a 'General Electrical Failure' fault. I purchased it from Transit Parts when I swap it for the inner right sensor it then shows the inner left fault and with no sensor it says as above. This suggests the sensor is fine. It has worked once or twice in the past month but it will work and then if you put the car into reverse say 5 minutes later I get the continuous noise then nothing again. Could this be the module or faulty wiring somewhere? Thanks

Re: PAM Internal Component Failure

Posted: Mon May 20, 2019 7:49 pm
by denbo
If it works ok on another plug then i would go for a wiring fault. Did you test the old sensor the same way?