Please post when it came up, what is your fuel setup, have you gotten any codes, and anything else you can possibly tell me. Obd1 or 2, what kind of car/year/model.

I personally get this code when going uphill not even under boost at all, boosting doesn't trigger it at all PERIOD. Its going uphill that pisses it off and throws the code and it never goes away.

I know its a BARO sensor ON my ecu but I also know its NOT broken, so why the hell do I always throw this code???? I run straight up AFC hack 440cc injectors and no missinglink, NEVER had a map sensor code ever. I boost 8lbs daily.

 

I've had it on my Civic numerous times before Hondata, no idea why but, it was always there like 2 days after I'd reset it.. never did find out why?

 

I got it once when I was driving on the freeway, part throttle, no boost, slightly uphill. I'm also running the hack. I had just gotten rid of the O2 code that has plagued me for like two years and had been code-free for about a week. When the CEL came back on, I thought "aww crap, there goes my O2 again...", but when I pulled over to check the code, it was a 13, and I didn't have my Helm's or list of CEL codes with me, so I didn't know what it was. I reset the ECU, and kept on going, and it hasn't come back since. That was about a month ago.

 

I think it probably has something to do with the fact that the voltage the MAP is seeing is about 40% less than what it should be seeing, and when the ECU compares that to the readings its BARO sensor gives it, it assumes the BARO is off. That's the only thing I can think of.

 

I have had a code 13 for about a year now. Came on before boost and hondata installed. Since then new ecu and still code 13.

 

Thats a safe assumption but still the hack is setup so you don't see boost, and I was actually watching the VOLTAGE the map sees today instead of normal monitoring on the afc and it never even hit 4v although I never hit full boost.

Sucks that yours just went away and mine NEVER wants to go away :/ I reset and it just comes back the next time I go up a hill....

 

You're throwing a code 13 because the delta between the baro sensor and map sensor is so wide with that AFC hack. Solution: get rid of afc hack The baro sensor is internal, on the board in the ecu.