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2004.5 Dodge Ram 2500 Cummins, P code 1652. All lights on…

2004.5 Dodge Ram 2500...

2004.5 Dodge Ram 2500 Cummins, P code 1652. All lights on the dash are lit up, also says "no bus"

Mechanic's Assistant: Have you checked the fuses? The dashboard bulbs?

I have been doing research on the web and have checked ground wires around the engine compartment. Haven't checked fuses yet

Mechanic's Assistant: Are you fixing your Ram yourself? What have you tried so far?

I'd like to fix it myself if possible

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

No, the code and lights just came out of the blue yesterday

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Answered in 10 minutes by:
11/10/2017
Eric
Eric, Automotive Repair Shop Manager
Category: Dodge
Satisfied Customers: 33,448
Experience: 20+ yrs. experience as repair shop manager and technician.
Verified

HI,

Ok, this code is for a short to ground a J1850 circuit. Either the ECM is faulty or wiring. Most of the time it is the ECM. I have attached the specific testing you need to do.

If for any reason, you can't rate my answer OKAY, GOOD, or EXCELLENT/3 STARS OR HIGHER today. Please reply and let me know why, so I can help more/better. All follow up responses are FREE, after completing the required rating

Please remember to rate service using the separate rating page. Thank you

Eric
Eric, Automotive Repair Shop Manager
Category: Dodge
Satisfied Customers: 33,448
Experience: 20+ yrs. experience as repair shop manager and technician.
Verified
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Customer reply replied 3 months ago
I don't have a multi-meter, I'll have to pick one up at the auto store. Do you have any suggestions on where to start if the problem is a bad ground/wire? Also, if it is the ECM, what is a fair price for a shop/dealership to put in a new ECM?

HI,

If you go thru a dealer, expect about $900 parts and labor. You are better off purchasing a reman from a local parts store or thru AESmodules.com, providing them the vin number and mileage so that they program it and it is just a plug and play part at that point.

If not the ECM, then likely a ground wire to the ecm or possibly 2 wires at the ecm have chafed and touching each other

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Eric
Eric
Eric, Automotive Repair Shop Manager
Category: Dodge
Satisfied Customers: 33,448
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Experience: 20+ yrs. experience as repair shop manager and technician.

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