P0150 - p0130

Question

Why check engine light 2days on and some days is off ?

Answer 1

P0130  02 sensor circuit malfunction bank 2 sensor 1

P0150  02 sensor circuit malfunction bank 1 sensor 1

This is a circuit malfunction , , if you recently replaced both 02 sensor and replaced it with a aftermarket sensor you get this intermittent code, you can also get this code from fuel cleaner additives.