P0174 Code – Ford Ranger 4.0L V6 1997

Car Forum Trouble Codes P0174 Code – Ford Ranger 4.0L V6 1997

  • jmiv
    Community Member
    December 13, 2021 at 8:03 pm

    I have been having P0153 (o2 sensor) codes but have not replaced the sensor as of yet. Recently, I got the P0174 and P1151 code. Truck starts up fine and runs when cold. After running and shut off and sits for about 5 mins, when you try to start it, motor cranks over but will not start. If I let it sit for a while, it will start but run very rough.  I would think if it were an intake manifold issue you start having problems at the start. Could the O2 sensor since it is hot, cause the engine roughness when starting engine again at temp??



    Brand: Ford
    Model: Ranger
    Year: 1997
    Engine: 4.0L V6

    December 13, 2021 at 10:20 pm

    So all codes tell there is a problem on bank 2 – the side with cylinder 2-4-6. Either it is a problem with the O2 sensor giving a false alarm of lean mixture, or the mixture is lean for real. In this case, I strongly believe you need to replace O2 sensor 1 on bank 2. If you have a little experience you can also test the sensor to be 100% sure it’s bad, but it requires some diagnostic skills!