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Honda Fit/Jazz - DTC Troubleshooting: P0401 (80-1) (5MT without ETCS)
Online Honda Fit/Jazz 2002-2005 Workshop repair manual used by professionals.
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Snip from the Manual
DTC Troubleshooting: P0401 (80-1)
DTC P0401 (80-1): EGR Insufficient Flow
1.Reset the ECM/PCM.
2.Test-drive under the following conditions.
- Without any electrical load.
- Decelerate from 88 km/h (55 mph) for at least 5 seconds.
3.Check the Temporary DTC with scan tool.
Is Temporary DTC P0401 indicated?
YES - Clean the intake manifold EGR port with carburetor cleaner. Clean the passage inside the EGR valve with carburetor cleaner or replace the EGR valve.
NO - Intermittent failure, go to