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Home >> Honda >> 2021 >> Insight EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Advanced Diagnostics (2 Of 2) >> Advanced Diagnostics >> DTC P1721 >> Enable Conditions
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Enable Conditions

Condition Minimum Maximum
12 volt battery voltage
[Battery]		 10 V -
Other There is no F-CAN communication failure

[ ]: HDS Parameter

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