What does P1194 mean on a Ford?

P1194. Engine Control Unit A/D Converter Fault. Applies to Ford diesel models with electronic injection control.

What causes P1194 on a Ford?

Internal controller conversion fault Voltage spike damage Water intrusion Failing controller power supply Software corruption

How do I fix P1194 on a Ford?

Verify controller power and ground Check for water damage Clear and see if the fault returns immediately Attempt a reflash where applicable Replace the controller if the fault persists

Code

P1194

Engine Control Unit A/D Converter Fault

Category: Powertrain - Computer and Auxiliary Controls
Severity: Check Engine Light
Applies to: Ford diesel models with electronic injection control
Related: P0606 PCM Processor Fault on OBD Codes List

Findings, check these first

Internal controller conversion fault
Voltage spike damage
Water intrusion
Failing controller power supply
Software corruption

Standard procedure

Verify controller power and ground
Check for water damage
Clear and see if the fault returns immediately
Attempt a reflash where applicable
Replace the controller if the fault persists

Code lookup

Type a code above, or start from a symptom or a common code.

Press / to jump to the box. Ford-enhanced powertrain, body, chassis and network codes. Generic P0xxx codes live on OBD Codes List.

Sources and review

Review: qualified. Read the source limits below.

OBDII.pro: P1194 Ford definition
live reference page (obdii.pro)
Supports: Ford-family meaning for P1194: ECU A/D Converter
Fetched directly. obdii.pro is a publisher independent of the engine-codes family.

Last updated 2026-09-05.

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