Manufacturer-specific
Ford C116A: ABS Pressure Transducer / Brake Switch Mismatch
Manufacturer-specific chassis/ABS status: the stoplamp/brake-switch message does not agree with hydraulic brake-pressure input during that ignition cycle.
Not a readiness code
What the code tells you
- The ABS module saw a mismatch between brake-applied signaling (stoplamp/brake switch / related network message) and hydraulic pressure.
- The finding is about brake/ABS inputs, not OBD readiness monitors.
What it does not tell you
- That P1000 is present or that emissions monitors failed.
- Which single part has failed without a scan-tool diagnosis (switch, wiring, network, HCU/transducer, or related ABS faults).
Diagnostic direction
- 1
Treat C116A as an ABS/brake-signal diagnosis. Use Ford service information for the vehicle year and module set.
- 2
Record companion ABS codes from the same scan (they are the diagnostic priority if stored).
- 3
Do not clear codes repeatedly to ‘force’ it off; correct the mismatch, then cycle ignition as the service procedure specifies.
- 4
P1000, if also present, is a separate readiness-status topic — see the P1000 guide.
Related codes
Possible causes are listed only when they are this code’s actual meaning — not a generic template pasted onto every DTC.
This site provides general diagnostic information. Vehicle procedures vary by model, year, engine, and calibration. Follow Ford service information and local regulations, and use a qualified technician when diagnosis or repair exceeds your experience.