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Honda Fit/Jazz - DTC Troubleshooting: P0401 (80) (With ETCS)
Online Honda Fit/Jazz 2002-2005 Workshop repair manual used by professionals.
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Snip from the Manual
DTC Troubleshooting: P0401 (80)
DTC P0401: EGR Insufficient Flow
1.Turn the ignition switch ON (II).
2.Do the DTC CLEAR in the CLEAR MENU with the HDS.
3.Do the EGR TEST in the INSPECTION MENU with the HDS.
Is the result OK?
YES - Go to 4.
NO - Go to 6.
4.Test-drive under following conditions.
- Engine Coolant temperature more than 70°C (158°F)
- Transmission in 4th gear
- Vehicle speed at 20 km/h (13 mph) or more, and engine speed between 1,000 rpm (min-1) and 5,000 rpm (min-1)
- During the drive, decelerate (with the throttle fully closed) for 5 seconds, and repeat that 5 times