CODE 401 for ever
#1
CODE 401 for ever
Hello all, I have 1995 2.3 ranger and i have a CEL light on for about a year. got it read and code 401came up. they wanted to charge me 900.00 dollars to do all this that i have already done. Replaced egr and its sensor, cleaned egr tube with carb cleaner, ran seafoam, replaced hoses to sensor and nothing. Code keeps coming up. I have cleared the code by unplugging negative cable for hours. what can it be? I plan on removing upper intake and cleaning carbon buildup at port where it attaches to egr valve. but hesistant because of throttle cable. What do u all think?
#3
#6
My dad's F150 originally had the aluminum DPFE sensor when it failed, and replacement was plastic. I went through about 6 different plastic DPFE sensors, from AZ to OEM, and they all failed within a few weeks or months. I finally went to a salvage and bought a USED aluminum sensor...and the code never returned.
#7
fixed code 401
Just to let you guys know with the same 401 code. it was my upper intake that was clogged with carbon. had a friend remove intake and clean it with carb cleaner. stuff was hard like a rock. so for future 401 codes be advised insufficent flow means it clogged and you have to remove the carbon buildup in the upper intake before you replace all that stuff that i did before. I passed emissions and did not have to pay precision tune the nine hundred dollars thay qouted me. yeeepeeeee!!!!
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