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Genel OBD2
🟡 Medium
Genel OBD2
P0404
EGR Circuit Range/Performance
The P0404 diagnostic trouble code (DTC) indicates a EGR Circuit Range/Performance. This is an emissions-critical fault that prevents the vehicle from effectively reducing airborne pollutants. The sensor is providing data that is 'out of bounds' relative to other sensor readings, indicating a calibration or mechanical issue.
Brand
Genel OBD2
Fault Code
P0404
Severity
🟡 Medium
Models
Tüm marka ve modeller
🛠️ Diagnostic Overview
Difficulty Level
🛠️🛠️
Medium (Moderate)
Estimated Time
⏱️ 1-2 Hours
🧰 Required Tools
- ✓ Digital Multimeter
- ✓ Socket Wrench & Hand Tools
- ✓ Electrical Contact Cleaner Spray
⚠️ Possible Causes
- Faulty EGR valve position sensor
- Carbon buildup on EGR valve
- Faulty solenoid
🔧 Recommended Fixes
- Clean EGR valve
- Replace EGR valve assembly
- Check wiring
🚗 Commonly Affected Vehicles
🏭 Genel OBD2 – Other Common Fault Codes