Home >> Honda >> 2007 >> Accord Base, Standard, APG6 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Advanced Diagnostics (Except Hybrid) - DTC P0420 - P0735 >> DTC P0685: Engine Control Module (ECM)/Powertrain Control Module (PCM) Power Control Circuit/Internal Circuit Malfunction (L4 Engine) >> Enable Conditions (L4 Engine)