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Civic EX, 4D Sedan, Standard
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EGR System (Except Hybrid)
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EGR System (Except Hybrid)
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DTC Troubleshooting
Notes
DTC P0401: EGR Insufficient Flow Detected
DTC P0404: EGR Valve Insufficient Lift**, DTC P1491: EGR Valve Insufficient Lift*
DTC P0406: EGR Valve Position Sensor Circuit High Voltage**, DTC P1498: EGR Valve Position Sensor Circuit High Voltage*