CODES 13 & 14

[..SNAKEBIT..]

is there a diagnostic chart for these codes?
both show cyl #1
intake pressure sensor
all I was able to check tonite was the hose is connected

 

[Mooseman]

13 says a short or open circuit for the #1 pressure sensor so I would suspect a problem on the circuit and 14 is just a result of 13. Either the sensor is bad or the wiring. Try swapping the plugs on the two sensors. If the code changes to a 25, then it's the sensor. If it stays 13, then it's the wiring.

 

[..SNAKEBIT..]

why didnt I think of that
thats just what I wanted a quick sensor test

 

[Mooseman]

I basically use the same method with coils on my truck. Please report back what you find. Would be good to know what might have failed.

 

[..SNAKEBIT..]

ok when I start it, will the ecm read the sensor right away or will it have to warm up?.
I switch the wire harness and it still showed 13 & 14
so its in the harness or ecm?
any test I can do to the harness?

 

[Mooseman]

I would suspect the wiring before anything with the ECU (although I have just been through a complete failure of one myself). Grab a copy of the repair manual and check the wiring diagrams for wire colours and start tracing the wiring. Check the connector first since it is handled on a regular basis whenever we take the airbox off.

 

[ahurtig]

Mine did the same thing and it was the hoses connected to the bottom of sensors. One was broke of and one was just off

 

[..SNAKEBIT..]

ok when I start it, will the ecm read the sensor right away or will it have to warm up?.
I switch the wire harness and it still showed 13 & 14
so its in the harness or ecm?
any test I can do to the harness?

Will it switch sensor codes right at start up or does it have to run or warm to a certain temp before it starts to read the sensors?? only ran it for 5 secs, showing same codes???

 

[Mooseman]

If it was a problem with the sensor, then yes, the codes should have changed right away since there are no "stored" codes like in cars. That's why I would suspect the wiring.