OBD Guide
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P1401

DPFE Circuit High Input

P1401 is an OBD-II diagnostic trouble code meaning: DPFE Circuit High Input. Common causes: dpfe sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine Light Is On
  • Unstable engine idling
  • Reduced engine power
  • Increased fuel consumption
  • Dips during acceleration

Causes

  • DPFE sensor malfunction
  • Open or short circuit in the sensor circuit
  • Problems with the sensor wiring harness
  • Dirty or clogged EGR pipes
  • EGR valve malfunction

How to Fix

  1. Check DPFE sensor circuit continuity
  2. Test the DPFE sensor
  3. Clean or replace EGR pipes
  4. Check the operation of the EGR valve
  5. Replace DPFE sensor if necessary

Related codes

P0401P0402P0403

Error P1401 by Vehicle Brand

BMWFordJaguarKiaLexusLincolnMazdaMercedes-BenzMercuryNissanSubaruToyotaVolkswagen

FAQ

What does the P1401 code mean?

P1401 is an OBD-II diagnostic trouble code that indicates: DPFE Circuit High Input

What causes a P1401 error code?

The most common causes of P1401 include: DPFE sensor malfunction; Open or short circuit in the sensor circuit; Problems with the sensor wiring harness; Dirty or clogged EGR pipes.

How do I fix a P1401 diagnostic trouble code?

To fix P1401: Check DPFE sensor circuit continuity. Test the DPFE sensor. Clean or replace EGR pipes. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1401?

Yes, but get it checked soon

How much does it cost to fix P1401?

The estimated repair cost for P1401 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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