C1198: owner reports and bulletins

Chassis. We haven't written the explanation for this code yet. Below is what owners and manufacturers have filed with NHTSA.

Got C1198 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

33 complaints filed with NHTSA mention C1198, 5 of them since 2015, across 2 different models. The component owners most often filed it under: service brakes.

Most-reported models

VehicleComplaintsModel years reported
FORD WINDSTAR321999, 2000, 2001, 2002, 2003

Manufacturer service bulletins that name C1198

4 technical service bulletins and manufacturer communications filed with NHTSA mention C1198, from 2 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • FORD EXPLORER (2020, 2021, 2022), bulletin 10205484: Some 2020-2022 Explorer/Aviator vehicles may exhibit an illuminated MIL with multiple diagnostic trouble codes (DTC). These DTCs may include P04F0, P008A, P0451, P0455, P0456, P0496 and/or P018C. This may be due to the w…
  • LINCOLN AVIATOR (2020, 2021, 2022), bulletin 10205484: Some 2020-2022 Explorer/Aviator vehicles may exhibit an illuminated MIL with multiple diagnostic trouble codes (DTC). These DTCs may include P04F0, P008A, P0451, P0455, P0456, P0496 and/or P018C. This may be due to the w…

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.