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Front ABS codes on a rear ABS only truck.

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Old Oct 6, 2019 | 03:26 PM
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Default Front ABS codes on a rear ABS only truck.

Hello
First time on forum. If im in wrong area please move as needed and apoligies.
2001 Dodge RAM Sport 5.2L 2WD
Rear wheel only ABS. (Sensor in differential)
Question.... Why is computer grousing about front ABS conditions when no front ABS exists? (See pic below) Any assist/comment would be helpful.
Kindest Regards


 
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Old Oct 6, 2019 | 03:36 PM
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My guess is, your computer thinks it should have ABS. Was the PCM replaced on the truck in recent memory?
 
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Old Oct 6, 2019 | 07:26 PM
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Default Original PCM

Hi
That was a thought so i checked the VIN in the PCM and it matches the truck. Is there a way for someone to have changed the VIN in the PCM?
Thanks for the reply
 
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Old Oct 6, 2019 | 11:56 PM
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Programming the correct VIN is standard procedure when replacing it. That's why the online PCM places ask for it. However the "CAB" (controller antilock brakes) actually has a CCD bus connection so I'm thinking the error is stored in the CAB not the PCM. What is the part number of the CAB ? Maybe it got changed.
 
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