2007 Dodge Ram 2500, Took it in to the Dodge Dealership for a diagnostic this is what it said Engine light is on and the abs and brake lights. Also the Speed odometer is not working. Diagnose only caused by found DTC B2213 for instrument cluster internal U0121 Lost Comm. With Abs Module Cleared DTC'S U0121 Came back active. Tried to initilize abs module, But it did not correct the concern. ABS Module had Internal Failure. May have problem with instrument Cluster. They told me to replace the ABS MODULE and than if that did not solve the problem than to replace the INSTRUMENT CLUSTER. I ordered the ABS Module and replaced that first didnt change anything so I ordered the INSTRUMENT CLUSTER next and replaced that IT DID NOT FIX THE PROBLEM. So needless to say $900 later, have to fight with the Dodge dealership for a credit on parts I do not need and still have the problem and nobody knows what the **ll is wrong. HELP PLEASE! The truck has also for no apparent reason just quit on me 3 times while driving. I have had to put it in N while coasting and start it back up. It has never did this to me until after the lights came on.???? The issue started after I plugged in a new trailer to test the trailer brakes. The trailer is all rewired and working.

SOURCE: 1998 dodge ram 1500,abs and

REAR WHEEL ABS SENSOR LOCATED ON DIFF HOUSING

SOURCE: dodge ram1500 brake light abs light spedometer odometer no work

you should have your vehicle scanned with OBDII.(on board diagnostics) . take it to a shop and tell them your engine light is on and they'll hook a computer to it and find out why

SOURCE: Emission test found some trouble codes

U0121 Communication error to ABS HU/CM

Harvey N Tawatao

• 3854 Answers
• Posted on May 26, 2009

SOURCE: 97 Dodge Caravan Auto-Shutdown Problem

Been working on my dad's 97 Caravan longer then i can remember for things you mentioned and have been not able to get him to sell it.
I found that the electrical connections are prone to corrosion and have replaced lots of the wire and pin connection in the wire harness, thank god i have time on my hands.
The instrument panel where the wire harness connects, i found that the solder goes bad and i had to re solder the connector on the back side of the circuit board, where the harness goes so you need to remove the instrument panel from the dash,
Here is a link that can help you retrieve DTC codes and do research on your caravan. I'ld tell you everything what i needed to do to keep my dad's caravan running but that would be a novel. http://www.allpar.com/fix/stall.html

Good luck and keep me posted, glad to help you keep yours running too.

SOURCE: 2007 Dodge Ram 2500,Engine light is on and the abs

There are two sensors that can cause this. One is located on top of the rear axle pumpkin, and the other is either on or inside the trans.

I would check the rear axle one first as it should be the cheaper and easier of the two.