What does code P0471 mean?
The exhaust pressure sensor signal is out of range or inconsistent with engine operating conditions.
OBD-II Code
P0471 — Exhaust Pressure Sensor Range/Performance
The exhaust pressure sensor signal is out of range or inconsistent with engine operating conditions.
Common symptoms
- Failed regeneration cycles
- white smoke
Possible causes
- Damaged sensor
- obstructed pressure lines
Initial recommendation
Inspect pressure tubing for blockage and replace exhaust pressure sensor if readings remain incorrect.
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 P0471 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more codes