Code 31

[ocalasales]

Can't clear code 31 using the jumper wire, should I just disconnect batteries and go from there?

 

[gnel]

Did you do the stand on the brake and gas pedal procedure? Cleared mine up no probs.

 

[THEFERMANATOR]

Can't clear code 31 using the jumper wire, should I just disconnect batteries and go from there?

If this is for the truck in your sig, I don't see why you would have a code 31. The BURBS all had F engines without an EGR, and code 31 is for the EGR pressure sensor. Unless the F ECM throws this code if the baro sensor goes out of range(the firewall mounted MAP sensor is for altitude readings on F engines, and altitude AND EGR on S engines).

 

[ocalasales]

I was wondering the same thing, why a code 31, doesn't make sense on an F code engine to me, does anyone have any ideas?

Thanks

Bob

 

[gnel]

The truck I hope to buy today did the same thing when I had the vacuum lines switched at the controller. Its a 1995 chevy 2500 4x4 f code.

 

[buddy]

Some F engines had EGR, does this engine have 3 solenoids on the drivers side valve cover and an EGR valve on top of the intake?

Are you sure its not flashing 13, Flash....Flash.Flash.Flash

You need to depress both pedals for more than 15 seconds with the jumper in and key on