garajizOBD-II code · generic
P0400
Exhaust Gas Recirculation Flow
- System
- P0 — Powertrain (generic)
- Severity
- Moderate (3/5)
- Can I keep driving?
- Drive with caution
What does P0400 mean?
P0400 is defined as “Exhaust Gas Recirculation Flow”.
Drive gently and only as far as you need to; have it checked as soon as possible.
Manufacturer-specific meanings
The same code can mean something different on some makes.
- Nissan: Exhaust gas recirculation (EGR) system – flow excessively high or low
Related codes
- P0401Exhaust Gas Recirculation Flow Insufficient Detected
- P0402Exhaust Gas Recirculation Flow Excessive Detected
- P0403Exhaust Gas Recirculation Control Circuit
- P0404Exhaust Gas Recirculation Control Circuit Range/Performance
- P0405Exhaust Gas Recirculation Sensor 'A' Circuit Low
- P0406Exhaust Gas Recirculation Sensor 'A' Circuit High
Look up another code
This page is general information; an exact diagnosis needs measurements and a technician’s check.