nurkvinny Posted May 1, 2009 Report Share Posted May 1, 2009 Vehicle - 2006 Dodge Ram 1500 4x4 QC with 5.7L. Story - My wife's Equinox blew a fuse and her suv had no spares. I look in the underhood fuse block of Ram, find one labeled "SPARE", take it out to use in her car. The next day, I pull out of the driveway, make it about 20 feet, and 3 lights pop on and the speedo stopped working: "BRAKE" "SES" and "ABS". Truck still runs and restarts. Ran codes : D120, U1120, and U0121. I Googled all the codes, and found that the usual cause is a bad speed sensor mounted on top of rear end pumpkin. Got the part from Dodge, replaced sensor, made no difference (even after unhooking battery for 30 minutes and then explicitly deleting the codes). As soon as the truck goes 10-20 feet, all 3 lights come back on. I went 80-90mph, and still no speedo. So, yeah... help? Obviously, I want to avoid the dealership. EDIT - and yes, I checked all other fuses, and replaced the "spare" fuse that I took out in case it was not a spare. Quote Link to comment Share on other sites More sharing options...
wnaplay1647545503 Posted May 1, 2009 Report Share Posted May 1, 2009 Will unhooking the battery reset the system just incase you accidentaly hit something the first go around? Quote Link to comment Share on other sites More sharing options...
nurkvinny Posted May 1, 2009 Author Report Share Posted May 1, 2009 even after unhooking battery for 30 minutes and then explicitly deleting the codes Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted May 1, 2009 Report Share Posted May 1, 2009 there is a tsb on that for rams replace speed sensor in the trans and all will be well edit just saw it was 4wd the speed sensor might be on the transfer case Quote Link to comment Share on other sites More sharing options...
wnaplay1647545503 Posted May 1, 2009 Report Share Posted May 1, 2009 I'm an idiot and reading owns me:( Quote Link to comment Share on other sites More sharing options...
nurkvinny Posted May 1, 2009 Author Report Share Posted May 1, 2009 there is a tsb on that for rams replace speed sensor in the trans and all will be well edit just saw it was 4wd the speed sensor might be on the transfer case For an 06? I am 90% sure the only speed sensor is in the rear end (reading off the ring gear maybe?) ANYWAYS --- I fixed it. I went back out and took a spare fuse and one by one put it in the "SPARE" locations. One combination fixed it. Don't believe your fuse cover when it says a fuse is just a spare. All lights off, speedo working. Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted May 2, 2009 Report Share Posted May 2, 2009 the sensor in the rear is for the abs fuse fixed it all is well Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 2, 2009 Report Share Posted May 2, 2009 sure you was looking at the fuse map right? some of those dodges are kind of funny and unhooking the battery, does not work on OBDII car's. well most. in most only the ecu can erase them thru a code reader/scanner Quote Link to comment Share on other sites More sharing options...
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