Question

P0138 Toyota - This code comes in my Corolla 2010 model. The MIL light gets illuminated and remain for some time (a couple of days) and then goes off. This comes only during summers when the outside temperatures are high (35 degree centigrade). If the problem is with the sensor or wiring, the light should not go off. Will it be wise to change the O2 sensor in that case. Please suggest

Answer 1

they first thing to do would be replace the sensor. If you car is under warranty it will be covered since its a 2010