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Home >> Honda >> 2013 >> Insight Base >> Repair and Diagnosis >> Engine Performance >> System >> Advanced Diagnostics >> DTC U1220 (34): DC-DC Converter Lost Communication With Motor Control Module (MCM) >> Enable Conditions

Enable Conditions

Condition Minimum Maximum
MCM power-supply voltage 7.5 V -
Battery module voltage 40 V -
Ignition switch ON (II)
No active DTCs set (prevents monitor from running) P0602 (92), U1221