What does code P0401 mean on a Land Rover and is it safe to drive?
P0401: Exhaust Gas Recirculation Flow Insufficient. Here's what it means on your Land Rover, what usually causes it, what repairs typically cost, and how safe it is 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 for your Land Rover
- 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 Land Rover, repairs for P0401 often fall between $150 and $600, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.
Known issues on Land Rover
Land Rover 3.0L V6 P0401 insufficient EGR flow is carbon accumulation in the EGR valve. On high-mileage Discovery and Range Rover Sport, the EGR cooler should be inspected for internal leaks—coolant in the intake contaminated by a failed cooler causes repeat P0401 codes.
Most commonly affected models
Range Rover 3.0L V6 2013–2020Discovery 3.0L 2017–2023Range Rover Sport 3.0L 2014–2020