hi u guys doing i just did a head gasket job with all oem parts spark plugs water pump timing belt thermostat coolant seals everything oem now when i turn my car is giving me this codes i just gor the car from shop today and when i check the enginei it seeing like am missing a bolt on front cats could this be the problem... that i got a leak by the front cat or should i be worry for anything else???

 

inspect all vacuum lines and hoses to make sure they are connected to the intake etc. or you could have a bad o2 sensor.

Im not sure if missing a nut on there would cause the system to have a leak or not?

 

i did check all vacum amd hoses all of them are ok the only error i seen right now is the missing bolt i go to three different auto parts and non couldnt tell me when to find it and i dont feel like going to acura dealership for that but it seeing like i dont have a other choice