P2401: owner reports and bulletins

Powertrain (generic, all makes). We haven't written the explanation for this code yet. Below is what owners and manufacturers have filed with NHTSA.

Got P2401 on your scanner? Tell the mechanic your year, make, model and any symptoms and you'll get the likely cause and what to check first. Ask about this code.

What owners report to NHTSA

13 complaints filed with NHTSA mention P2401, 8 of them since 2015, across 7 different models. The component owners most often filed it under: fuel system, gasoline.

Most-reported models

VehicleComplaintsModel years reported
SCION XA62006

Manufacturer service bulletins that name P2401

3 technical service bulletins and manufacturer communications filed with NHTSA mention P2401, from 2 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • JAGUAR XJ (2010, 2011, 2012, 2013), bulletin 10096676: "SITUATION: THE ENGINE MALFUNCTION INDICATOR LAMP (MIL) MAY BE ILLUMINATED. UPON DIAGNOSIS, THE TECHNICIAN MAY FIND ONE OR MORE OF THE FOLLOWING DIAGNOSTIC TROUBLE CODES (DTC) STORED IN THE ENGINE CONTROL MODULE (ECM): P…
  • LAND ROVER RANGE ROVER SPORT (2006, 2007, 2008, 2009), bulletin 10101264: "ISSUE: THE ENGINE MIL IS ILLUMINATED AND ONE OF THE FOLLOWING DTC'S ARE SET: P2401-00, P2402-00, P2404-29, P2404- 2F, P2405-00, P2406-00, P240A-00, P240B-00, P240C- 00, P2450-00 OR P2451-00 CAUSE: IF NO FAULT IS FOUND O…

Sources: NHTSA Office of Defects Investigation complaint database and manufacturer communications file, snapshots September 2026. A complaint or bulletin that mentions a code is a report about that vehicle, not a statement that the code has one cause.