Hey Folks,

2006 Lexus IS250 2.5L AWD

I did an exhaust front to back after market bought from a Canadian company Premier Performance, also replaced the Oxygen sensors, Denso exact fit, now after the install I get Check VSC and codes P0031, P0051 and P0102 and it has no power when you accelerate, one FYI the Check VSC code was triggered prior to the exhaust replacement, original code was P0102 so I replaced the MAF sensor, still get codes as above and no power, anyone else experience this or know what I can do or try to resolve short of taking it to the stealer?

I did check for vacuum leaks and did not find any.

Thanks,

 

Its likely the P0102 is killing all hope as that's a critical input, without it, the engine is using default override values which places the engine in limp mode as it has no idea how much air is entering the engine.

To loose both sides after hardware change sounds suspicious. Id plug the old ones in and clear the codes. The heater error should go away but you'll get other errors if the sensors are not screwed in.