2010 GL450 ODB2 codes 172, 175 (running rich)
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2010 GL450 and 2014 E550 Coupe
2010 GL450 ODB2 codes 172, 175 (running rich)
Looking for advice on what to try first to fix my 2010 GL450 which is getting intermittent check engine lights for codes 172 and 175. If i reset the codes sometimes it doesn't happen again for a couple of days, even after very long drives. Sometimes it happens pretty quickly.
This doc says to first see if there has been a PCM update? How would I know if there has been a PCM update to this vehicle? I don't believe the previous owner had the car into a real MB dealer for a few years.
This doc says to first see if there has been a PCM update? How would I know if there has been a PCM update to this vehicle? I don't believe the previous owner had the car into a real MB dealer for a few years.
