p0401

Ive been researching here, other sites, chatgpt everything I can think of and i cant figure this out. 1999 Ranger 2.5L 126k miles , besides the check engine light i get this bogg of the engine when shifting into drive and starting off almost everytime. this is everything I did in order of...

Sorry to beat a dead horse but this P0401 is being a pain. Bought this 1995 2wd 3.0 automatic a yr ago and was doing some basic tune up stuff. Noticed the check engine light did not light during key cycle, it had a burned out CEL bulb. Replaced bulb to fix no light situation. Used a scan tool...

I plugged my OBD 2 scanner into the plug on my 1995 B4000 SE 4x4 4.0 OHV I got these codes: P0500 Vehicle Speed Sensor A Malfunction P0141 O2 sensor Heater Malfunction B1 S1 P0155 O2 sensor Heater Malfunction B2 S1 P1151 Lack of upstream heated O2 sensor _______switch; indicates lean...

Hello fellow forum members - Long time lurker that's picked up lots of useful information, but am now in need of some help. I'm working on my 1996 Ranger with a 4.0L. It has the P0401 EGR Flow Trouble Code. I've read countless postings on here to try and learn as much as I could. From what...