What’s up guys I got a 07 HR MT recently put ISR LTH and had a coworker make me extension harness for the O2 sensor and got the codes p0345, p0643 car was running great (tuned by LMT) I was doing a pull car started cutting at 7k rpm switched gears kept pulling hard but stopped again at 7k then SES light came on then car started to misfire swapped out both bank 2 cam position sensors with AutoZone ones car ran great again but still cutting me at 7k then went into limpmode what can be my issue? One of the wires from the O2 sensor was spliced n just put together without soddering it but it’s in the connector

 

Sounds like your guy wired your extension incorrectly. P0643 means there's 12V on a 5V circuit. He probably attached a heater circuit wire to the sensor wire by accident.

 

wouldn’t it throw a code for the O2 sensor then? But ima order a extension harness see if that’ll fix the issue because everything seems to be pinned correctly… do you happen to have a pin diagram for the connector?

 

Either that or there's an issue with your cam sensor harness. One of your 5V sensors is seeing battery voltage.

 

Issue ended up being ther aftermarket cam sensors from AutoZone where the p0345 code but the p0643 code I’m assuming has to do with my bank 1 o2 sensor harness from the engine side it was cut and taped together so I’m hoping that’s the issue