How do I get the "check engine" light to stay off to pass emissions?
1998 Dodge Ram 1500 SLT 2WD 5.9L. Replaced the speed sensor on the transmission in hopes of getting the check engine light to go out and I could then pass emissions - an Autozone test said it was bad two different times. Light went off briefly, but then came back on. The wiring and connections looked good. The speed sensor on the rear differential also bad, but did not replace (ABS and brake light have been on for a while and the speedo no longer works). Would the busted rear differential speed sensor cause the check engine light to come back on even though the speed sensor on the tranny was new and well connected?
