Thank you so much for taking the time and effort to make a good quality video. -Very helpful, I never even considered checking if the original part was bad or not.
Great video. Very informative and to the point. Thanks. Some questions though. What would be the voltage signal range when the vehicle is operating? I saw that you pull approximately 23inHG for 3.33 volts. It seems a lot of vacuum. Do you think the exhaust is able to pull that kind of vacuum while driving? Thanks again. Edit: Find my answer: at 8inHg of vacuum, the sensor needs to output between 4.5 and 5 volts; thus, it seems that that sensor may be faulty. Just throwing this out there if someone dealing with p0401 code.
Why on the first sensor you did resistance check between 1 and 4 th pin then the new part you read between pins 1 and 2 . How is this helpfull since you read from two different points.
I did the test on dpfe sensor how he did it. I put the lead just like him , nothing. Then I switched the leads and ohms reading at 700. I wonder if he got wrong
on the first sensor you did resistance check between 1 and 3 pin, then the new part you read between pins 1 and 2 . WHY? don't know which test is right and which test is wrong.
Hello. Mahalo for a great tutorial. I hope you're monitoring comments here and will answer. I have a '96 Explorer. The DPFE passed all the test except for the voltage when the engine is one and vacuum is applied. Rather than going up, the voltage went down. Can I assume that if the DPFE fails just one of the test you prescribed, it had failed? I also noticed that for positive polarity, I connected the positive lead to the bottom (blk/w wire) vs you connect the the common from the multi meter. Thanks in advance for getting back to me.
All I had to do is remove the hose connected to the DPFE mine was dry rotted. I added a new transmission cooler hose with clamps and the code for P1405 hasn't shown back up for me.
Very Helpful video. I changed mine out on my 2004 Expedition and because I broke one of the stems on accident, and it gave me an oxygen sensor code for Bank 1, Sensor 1. I change the sensor and STILL have the check engine light on. I disconnected the battery to eliminate the code, but it came on again. I check it with the diagnostic reader from AutoZone and these codes came up (P2195, P0135, P0401 and P0402). I'm at wits end. I was going to go to a mechanic to erase the codes first and see if that will shut the light off. Any other advise? Thank you!
Were you able to solve the check engine light issue? Sometimes you have to clear the memory of the PCM completely by disconnecting the battery cables and touching them together to completely discharge the system and clear the PCM. I thought that was my issue but the check engine light has come back on. So I am further diagnosing.
Or for $10 you can just buy new dpfe sensor off Ebay and pop it on in 1 minute.....if issue still exists..it wasn't that...you're only out $10 and not 45 minutes of troubleshooting and that's assuming you have a nice multi meter with adapters....
