P0443: 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 P0443 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

16 complaints filed with NHTSA mention P0443, 15 of them since 2015, across 8 different models. The component owners most often filed it under: fuel/propulsion system.

Most-reported models

VehicleComplaintsModel years reported
FORD FOCUS52012, 2013, 2016
CHEVROLET VOLT42016, 2017, 2018

Manufacturer service bulletins that name P0443

15 technical service bulletins and manufacturer communications filed with NHTSA mention P0443, from 7 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • JEEP GLADIATOR (2020, 2019), bulletin 10174146: Customer complaint includes check engine/MIL light on. Upon further inspection, fault codes will be found in the powertrain control module (PCM) for P0441, P0443 or P0449. Fault codes may be either active or stored.
  • GMC ACADIA (2017, 2018), bulletin 10129854: This Preliminary information communicates a concern of a MIL on with P0459 or P0443 setting and engineering investigating this condition.
  • CADILLAC XT5 (2017, 2018), bulletin 10129854: This Preliminary information communicates a concern of a MIL on with P0459 or P0443 setting and engineering investigating this condition.
  • CHEVROLET CAMARO (2017, 2018), bulletin 10129854: This Preliminary information communicates a concern of a MIL on with P0459 or P0443 setting and engineering investigating this condition.
  • BUICK ENCLAVE (2018, 2017), bulletin 10129854: This Preliminary information communicates a concern of a MIL on with P0459 or P0443 setting and engineering investigating this condition.
  • FORD TRANSIT CONNECT (2014, 2015, 2016), bulletin 10094582: SOME 2014-2016 TRANSIT CONNECT VEHICLES EQUIPPED WITH THE 2.5L ENGINE MAY EXHIBIT A CONSTANT OR INTERMITTENT ILLUMINATED MIL WITH VARIOUS DRIVABILITY ISSUES AND ONE OR MORE OF THE FOLLOWING DTCS: P0010, P0103, P0104, P01…

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.