Posts Tagged: P0521 no oil pressure on gauge

P0521 no oil pressure on gauge

P0521 no oil pressure on gauge — diagnose and fix Shops are reporting a large number of GM engines with a P0521 no oil pressure on gauge condition on the 5.3L, 6.0L and 6.2L engines equipped with active fuel management (AFM) systems. The P0521 engine oil pressure (EOP) sensor performance trouble code can be caused by a faulty sensor, a stuck AFM oil pressure relief valve or sludge buildup in the engine. Here’s how to diagnose and fix a P0521 no oil pressure on gauge condition Test the oil pressure … Read More