Monday, November 12, 2012

DTC P0440 P0442 - 2002 Toyota Sienna















NOTE: First step is to check your gas cap. If your rubber seal feels hard, brittle and has cracks. Replace it first. If DTC codes still come up. Replace the Roll Over Valve(ORVR). 9 times out of 10 the ORVR is cracked. From my experience in the field.



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