Why does the ABS, Brake and Check Engine Light stay on and Speedometer doesn't register till 25mph
Asked by lkitty May 22, 2013 at 01:10 PM about the Dodge RAM 1500
Question type: Maintenance & Repair
The ABS, Brake and Check Engine light all stay on and the speedometer doesn't register
till you get around 25mph and also drops out when approaching a stop. All was fine till I
shifted from 2 wheel to 4 wheel and also fueled up. The check engine code was P0138,
O2 sensor down stream. Any suggestions?
3 Answers
thejeepdoctor answered 10 years ago
if you have bearing failure in rear diff. Steel particals may be stuck to wheel speed sensor.Sensor has a magnet in it that will cause metal to block out signal.
Make sure all your fuses are plugged into the fuse box...even the spares. I had an ABS, Check Engine, and Brake lights on, and I read someone say that the fuse could be the culprit. I popped a fuse into the empty "Spare" fuse slot, and suddenly the lights went away! I wasn't able to smog and register my truck for 2 years because of a fuse! I was happy and mad at the same time.
Philusogood answered 5 years ago
Checked all fuses inside and under the hood, all were good. Problem check engine / ABS lights are still on, plus my speedometer does work, just started today, any answers from anyone who might know?
