Question

2000 Toyota Tundra 4.7L with code P1127, what does the code mean?

Answer 1

P1127 How did you get this code,and with what scan tool,the reason I ask P1127 is traction control code, Because it is a P1XXX this is manufacture,Now if you used a generic scan tool P1127 is exhaust not warm down stream.02 sensor. Lets say its generic code it means exhaust is not warmed up downstream 02 sensor,you have a upstream 02 sensor that is closet to the engine and a downstrean which is farthest from the engine,So the down stream exhaust is not warmed up.Here are some of the causes, a catalytic that is faulty,an air injection secondary,or exhaust leak.