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How to diagnose trouble Codes OBD-II

 
Old 09-10-2015, 10:55 PM
  #21  
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My 2000 F150 over drive light is flashing off over and over. I have tried to reset this but it just keeps flashing. I am assuming I have lost my over drive on the transmission.

Has anyone had this problem!

Thanks Gary
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Old 07-13-2017, 11:44 PM
  #22  
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Default 01 manual throwing codes

Hey friends. Im trying to get my 01 manual 4.6 to pass emissions inspection in our nations capital. Its throwing the following codes: P0135, P0136, O0401 and P0174. I replaced the intake spacer and gaskets and am prepared to change the upstream oxygen sensor ( bank 1) and DPFE sensor (EGR).
My question is: What should I do first? Can I get away with replacing only the oxygen sensor identified with the code? Might there be another cause for the DPFE/EGR code?
This is a work truck.. Im trying to get her back on the road legally and inexpensively. I appreciate your collective wisdom.
A
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Old 07-27-2017, 01:30 AM
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Originally Posted by Lenn View Post
Swanny posted this link and it helps diagnose trouble codes.

http://www.obd-codes.com/
Just help repair my car. Thanks
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Old 08-18-2017, 03:35 AM
  #24  
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Also check exhaust air if cats clogged could throw egr and o2 codes. As well best idea i think when reading codes is check o2 sensor in spec if so not issue. So money isnt wasted.
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Old 07-26-2018, 09:59 AM
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Hey folks. I am hoping you folks can help me out with some advice. I drive a 2002 F-150 with the 4.6L. It has been running super rough. The code reader says P0316 (misfire on start up) P0304 (Misfire on Cyl 4) and P0305 (misfire on Cyl 5) I have changed out the plugs and cleaned the injectors but to no avail. What would you try next? Any ideas would be appreciated. Thank you.
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Old 12-05-2018, 05:06 PM
  #26  
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I need help I have an 07 f150 5.4 missing on cylinder 5 and 8 changed plugs coils moved injectors and changed rockers and both vcts cant figure it out please help
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Old 12-07-2018, 01:10 AM
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If you purchased the part at a national auto parts chain, they have bi-directional scanners. Just ask them to clear all the codes.

Let's try and hope it will be a good solution.
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Old 01-02-2019, 09:27 AM
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Did you get an anwser?
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