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International Automotive Technicians Network
Re: 2011 Subaru P0340
Posted to Technical Discussion Forum on 3/18/2024

Reading the TSB that Allen referenced, shows that the polarity flipping does not change timing IF the falling edge is within the “window” that the ecm is expecting it in, relative to the CKP. Extra falling edges outside the window are of no concern. The TSB do... Login to read more.