WenmarOpen by Wenmar Pro

P1A1B on the 2011 Ford Escape

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.

Bulletins for this model year that name P1A1B
TSB-223532012-07-13. Service bulletin. FORD: DUE TO A POSSIBLE LEAK IN THE INTERNAL CHECK VALVE, THE RED BRAKE LAMP ILLUMINATES WITH DIAGNOSTIC TROUBLE CODE (DTC) C1015, C0101C OR P1A1B WITH BRAKE PEDAL FEELING NO CHANGE. *PE

1 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.