Another P0154
#1
Another P0154
HAve an 2001 Montero Sport 3.5L. Received a code last month (I forget the number) which lead me to replacing Bank 2 sensor 1 (Drivers side upstream) Bosh sensor. This month I have the P0154, looking throught the forum I see the best first step is to have the dealer re-flash, did that yesterday. Light came back on today with the same code. What would you recommend the next step be??
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