...running too lean on Bank 2 and misfiring in multiple cylinders. The pending codes indicate a system that is too lean on Bank 1 and a cylinder 2 misfire. To start troubleshooting, you should begin by ...
running lean. Here's a link on Code P053A. Vauxhall Workshop Manuals Here's the link on code P0171. P0171 System Too Lean Bank 1 53a code is for pcv system circuit. If this circuit fails it can result
Question about Ford Expedition
running lean, they dump fuel and that soots up the Catalytic Converter, so there is your other code. Replace the sensor that is causing the issue and run some Extreme Clean Catalytic Converter Cleaner
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