O2 issue need help!!!
O2 issue need help!!! Just installed a 408 stroker lq4 in a 2000 SS camaro. Everything was fine until a week ago while putting some miles on a start up tune to get the car ready for the dyno this Friday. Long story short check engine came on and threw code p0155. So I replaced the O2 sensor and disconnected the battery to clear the code. The check engine and code remained.
Tested all the wiring last night and got the proper voltage so I guess it is down to exhaust issues (Which I double checked all fasteners and block off plates to ensure tightness) and a faulty O2 sensor which should be new.
Am I missing anything or since I have no cats and a 3 1/2" ORY should I be using a different O2 sensor? Keep in mind the issue is with a pre cat o2 and the car is tuned to eliminate the rear o2's.
Any help would be appreciated!!
Tested all the wiring last night and got the proper voltage so I guess it is down to exhaust issues (Which I double checked all fasteners and block off plates to ensure tightness) and a faulty O2 sensor which should be new.
Am I missing anything or since I have no cats and a 3 1/2" ORY should I be using a different O2 sensor? Keep in mind the issue is with a pre cat o2 and the car is tuned to eliminate the rear o2's.
Any help would be appreciated!!
That is a b2s1 heater circuit code did you replace the right sensor? The heater circuit only works on start up for a predetermined about of time. Is will not affect tuning it will just take longer to warm up and have a light on. Your checked for power on the heater circuit? Voltage drop the wires from the pcm and see what you get
Yeah I replaced the correct sensor so I don't think that would be it. May swap sensors from bank 1 to 2 and see if the code follows the sensor. If it does not I will have to voltage drop to see what happens.
