I have a hex code 3E could you please tell me what it refers to.
Model: X XXXXX XXXXX pickup
I have checked the engine with a prolink but I cannot find the meaning of this code and it is the only fault code i have
Hi, my name isXXXXX code 3e indicates that the upstream O2 sensor is reading a high voltage. This could be caused by an excessively rich fuel mixture, a bad O2 sensor, a wiring problem or a bad PCM. But usually its a bad o2 sensor,Tim
30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL