What does code P0407 mean?
Low signal detected from EGR sensor B
OBD-II Code
P0407 — Exhaust Gas Recirculation Sensor B Circuit Low
Low signal detected from EGR sensor B
Common symptoms
- Poor engine response
Possible causes
- Faulty sensor B
- damaged wiring
Initial recommendation
Inspect wiring harness and EGR sensor B.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0407 with your vehicle's actual symptoms for more complete diagnostic guidance.
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