Code Definition

P1194 — ECM/PCM A/C converter

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Ford

About P1194

P1194 is a manufacturer-specific powertrain diagnostic trouble code recorded for Ford vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1194 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

This Ford code refers to the analog to digital (A/D) converter inside the Engine Control Module or Powertrain Control Module, sometimes listed as the A/C converter in code descriptions. The A/D converter is the internal circuit that converts the analog voltage signals from the vehicle sensors into digital values the processor can use. DTC P1194 is set when the module detects that this internal converter is not functioning correctly or is returning values that fail its internal self checks. Because so many sensor inputs pass through the A/D converter, a genuine fault here can cause several unre...

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