p0136,p0141,p0156

[my9746gt]

97 gt with long tubes and x pipe installed...are these codes normal for this set up?

 

[trinity_gt]

No, not "normal."

P0136: Circuit Low Voltage (Bank 1, Sensor 2)
P0141: Heater Circuit Malfunction (Bank 1, Sensor 2)
P0156: 02 Sensor Circuit Malfunction (Bank 2 Sensor 2)

Are your rear O2 sensors connected?

 

[my9746gt]

No, not "normal."

P0136: Circuit Low Voltage (Bank 1, Sensor 2)
P0141: Heater Circuit Malfunction (Bank 1, Sensor 2)
P0156: 02 Sensor Circuit Malfunction (Bank 2 Sensor 2)

Are your rear O2 sensors connected?

yes they are.one wire has been burnt to the pass side rear sensor but its not broke