[E90ROXS]

I have been using jb4 for over a year and today I'm getting these error codes. I did a search on the error codes and some of these are jb4 related. Please let me know what I can do to fix this issue.

121002 MAP sensor, short to ground
120408 Reduced power mode
12BD52 Lambda probe before catalytic converter, line error: interuption pump current line
118401 Mixture Control AFR too lean

My car has dp, Agency Power intake, exhuast system and jb4.

[bmw22915]

Originally Posted by E90ROXS

I have been using jb4 for over a year and today I'm getting these error codes. I did a search on the error codes and some of these are jb4 related. Please let me know what I can do to fix this issue.

121002 MAP sensor, short to ground
120408 Reduced power mode
12BD52 Lambda probe before catalytic converter, line error: interuption pump current line
118401 Mixture Control AFR too lean

My car has dp, Agency Power intake, exhuast system and jb4.

What map are you running?

[E90ROXS]

Originally Posted by bmw22915

What map are you running?

Map 3.
I set it back to map 0, deleted the codes and scanned again. So far the codes haven’t came back.

[bmw22915]

Originally Posted by E90ROXS

Map 3.
I set it back to map 0, deleted the codes and scanned again. So far the codes haven’t came back.

I had a similar issue on map three as well. What fuel are you running? Any e85?

My story isn't great because my turbo ended up failing due to a bearing going bad. I'd guess is the JB4 exposed the weak bearing as the turbo was pushing higher boost than stock. Other people have been running Jb4 without issue.

[E90ROXS]

Originally Posted by bmw22915

I had a similar issue on map three as well. What fuel are you running? Any e85?

My story isn't great because my turbo ended up failing due to a bearing going bad. I'd guess is the JB4 exposed the weak bearing as the turbo was pushing higher boost than stock. Other people have been running Jb4 without issue.

91 fuel! The 12BD52 Lambda probe before catalytic converter, line error: interuption pump current line error came back this morning. There is something wrong with JB4 newest firmware. Never had these issues in the last 2 years of using it.