What does code P1401 mean on Mazda vehicles?
The DPFE sensor voltage is higher than expected, indicating a circuit or sensor fault.
OBD-II Code Mazda
P1401 — Mazda — DPFE Sensor Circuit High Input
The DPFE sensor voltage is higher than expected, indicating a circuit or sensor fault.
Common symptoms
- Check engine light
Possible causes
- Faulty DPFE sensor
- wiring issue
Initial recommendation
Test DPFE sensor and inspect electrical circuit.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Mazda code P1401 with your vehicle's actual symptoms for more complete diagnostic guidance.
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