Ok I just had the engine replaced 379 miles ago, at 247 miles the check engine light came on P1152 and P1237. Now I know for a FACT that the guy that replaced the engine didnt put on one for the exhaust manifold gaskets. The research Ive been doing on this indicates that both codes are for a leak in the exhaust.... Can I get some verification please?

 

Anyone?

 

OK so P1237 is turbo 2 flow insufficent. Anyone on P1152? I know its an O2 sensor but which one?

 

Both codes were daused buy loose bolts on the exhuast manifold.

 

Glad you found it. Sorry somehow I missed this post.