P1402moderate severityPowertrain
EGR System
on 2010 Nissan Sentra 2.0L I4 MR20DE · FWD
What this code means
General EGR malfunction; flow not matching expected amount.
Symptoms
- CEL
- Rough idle
- Hesitation
- Increased emissions
- Engine knock
Common causes
- Clogged EGR passages
- Faulty EGR valve
- Faulty EGRC solenoid
- Vacuum leak in EGR
Diagnostic steps
- Clean EGR passages
- Test EGR valve
- Check solenoid
- Inspect vacuum lines
Repair notes
Clean EGR system or replace valve.
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