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P0194

Overview

Code

P0194

Code Type

P

Code Class

P0

System

Engine

Severity Level

Medium

Emissions Related

false

Drivability Impact

Major

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0194 indicates an intermittent signal from the fuel rail pressure sensor circuit

Symptoms

Intermittent Check Engine Light; Hesitation; Random stalling

Overview applies to this diagnostic code.

Affected Systems

On This Page

  • Code Definition

  • Symptoms

  • Affected Systems

  • Possible Causes

  • Diagnostic Steps

  • Drive Safety Notes​

More Resources

Intermittent fuel pressure data affects fuel delivery accuracy

Possible Causes

Loose wiring/connectors; Failing pressure sensor; Vibration-related faults

Diagnostic Steps

1 Perform wiggle test on sensor wiring; 2 Monitor live pressure data; 3 Inspect connectors for corrosion; 4 Replace sensor if intermittent faults persist

Drive Safety Notes

Sudden stalling may pose safety risks Prompt repair recommended

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