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P0456 Diagnostic Trouble Code Discussion for March 2013

EVAP System Small Leak

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Trouble Ticket Help Requests for DTC P0456
Help Request Posted
2001 Hyundai Elantra GT 2.0L MIL Lamp on, monitors not ready VIN: KMHDN55D51
P0456: EVAP System Very Small Leak Detected. ... emissions inspection. Reading codes in OBD II generic using MODIS results in a "U0D00", but reading under 'vehicle specific' yields the P0133, P0456, and P1166. After erasing codes, U0D00 resets immediately, and under vehicle specific, the P0133 s...
March 27, 2013