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Home >> Honda >> 2021 >> Insight EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Advanced Diagnostics (1 Of 2) >> Advanced Diagnostics >> DTC P04C1 >> Malfunction Threshold
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Malfunction Threshold

The return signal is open for at least 0.5 seconds when the PCM outputs the no signal to the fuel fill door opener solenoid relay.