P043E: 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 P043E 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

11 complaints filed with NHTSA mention P043E, 6 of them since 2015, across 6 different models. The component owners most often filed it under: fuel system, gasoline.

Most-reported models

VehicleComplaintsModel years reported
SCION XA52006

Manufacturer service bulletins that name P043E

9 technical service bulletins and manufacturer communications filed with NHTSA mention P043E, from 2 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • ALFA ROMEO STELVIO (2022), bulletin 10236927: Flash: Transmission Control Module (TCM) Updates **Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs…
  • ALFA ROMEO GIULIA (2022), bulletin 10236918: Flash: Transmission Control Module (TCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) …
  • 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…

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.