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Ask Jerry Your Own Question
Jerry
Jerry, Master Mechanic
Category: Dodge
Satisfied Customers: 1754
Experience:  ASE Master tech, 30 years exp. troubleshooter, driveability tech
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Charging at 12.25 volts. showing a fault code 42. power to

Customer Question

charging at 12.25 volts. showing a fault code 42. power to terminal 30 on asm but no power to any others
JA: Is the power loss consistent, or does it fluctuate?
Customer: consistent
JA: What is the model of your '12 Dodge?
Customer: dodge d250 with the cummins diesel
JA: Are you fixing your D250 yourself? What have you tried so far?
Customer: checked alternator and battery both are good checked engine codes showing code 42 checked terminals on asm and found one the terminal that should have power when the ignition is on doesnt
JA: Anything else you want the mechanic to know before I connect you?
Customer: that's about it ok
Submitted: 7 months ago.
Category: Dodge
Expert:  Mike S. replied 7 months ago.

Hi, I am Mike, welcome. I'm reviewing your question.

Expert:  Mike S. replied 7 months ago.

What does asm stand for?

Expert:  Mike S. replied 7 months ago.

From what module did you retrieve that code and is there any digits I front of that 42?

Customer: replied 7 months ago.
Auto shutdown relay
Expert:  Mike S. replied 7 months ago.

Where do you see an M in any of those words?

Customer: replied 7 months ago.
There was a 12 before and a 55 after
Customer: replied 7 months ago.
Typo
Expert:  Mike S. replied 7 months ago.

What? So the code as a 124255? That don't make sense

Plus why are you checking for power at the asd relay, I don't even see how that is tied into the charging system.

Customer: replied 7 months ago.
The alternator gets field power from the asr
Expert:  Mike S. replied 7 months ago.

From what module did you retrieve that code ?

Expert:  Mike S. replied 7 months ago.

Stop using initials if you are going to use the wrong initials. It's not an asr, it's an asd relay or just say auto shut down relay.

Expert:  Mike S. replied 7 months ago.

Are you sure this is a 2012 Dodge?

Expert:  Mike S. replied 7 months ago.

If you meant the codes were 12, 42 and 55 that sounds like a 1994 or earlier

Customer: replied 7 months ago.
Ok thanks anyways I will find out another way!???
Expert:  Mike S. replied 7 months ago.

yeah