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Voltage Auto Service specializes in advanced hybrid, plug-in hybrid and EV diagnostics. Schedule an appointment to have the fault properly tested before replacing parts.

2012 Hyundai Sonata Hybrid – Check Engine Light With P0456

  • Aug 16
  • 1 min read

CUSTOMER CONCERN

The check-engine light is on with EVAP very-small-leak DTC P0456.

CAUSE

Smoke testing with soapy water exposed hairline cracks around the charcoal-canister mounting bolts.

CORRECTION

Remove and replace the cracked charcoal canister, clear P0456, and verify the EVAP system passes its leak test.

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