2020 Dodge P0401: What It Means & Is It Safe to Drive?
P0401 on the 2020 Dodge: Exhaust Gas Recirculation Flow Insufficient. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
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What this code means
The EGR system is not flowing enough exhaust gas. Usually due to carbon buildup or a stuck valve.
Common causes on the 2020 Dodge
- Carbon-clogged EGR valve or passages
- Faulty EGR valve
- Faulty EGR position or differential pressure sensor
Symptoms
- Check Engine Light
- Rough idle, hesitation
- Knock under acceleration
Typical fixes
- Clean or replace EGR valve
- Clean EGR passages in intake
- Replace EGR sensor if applicable
Repair cost range
For a 2020 Dodge, repairs for P0401 typically fall between $150 and $600, depending on the root cause and labor rates in your area.
Known issues on Dodge
Dodge 4.7L V8 P0401 frequently comes from EGR tube cracking at the exhaust manifold flange—inspect before replacing the valve. Carbon accumulation in the EGR ports of the intake manifold is also common past 80k miles.
Most commonly affected models
Durango 4.7L V8 2000–2009Dakota 4.7L 2000–2007Ram 1500 4.7L 2002–2008