P0401
Moderate
Powertrain
Exhaust Gas Recirculation Insufficient Flow
Common Causes
Clogged EGR passages with carbon
Stuck-closed EGR valve
Failed EGR vacuum solenoid
Clogged EGR cooler
Common Symptoms
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Quick Info
| Code | P0401 |
| System | Powertrain |
| Severity | Moderate |
Disclaimer
This information is for diagnostic guidance only. Always verify repairs with a qualified technician before performing safety-critical work.
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