P0194 - Fuel Rail Pressure Sensor Circuit Intermittent

Fuel rail pressure sensor signal drops out or changes erratically.

Code Overview

Fuel rail pressure sensor signal drops out or changes erratically.

Common Causes

• Fuel pressure sensor failure
• Loose connector
• Harness issue
• Unstable fuel pressure

Diagnostic Steps

1. Monitor fuel rail pressure PID for glitches
2. Inspect the sensor connector and harness
3. Verify actual fuel pressure if equipment is available

Likely Repairs & Cost Guides

Use test results to confirm the fault before pricing the repair.

Related OBD Codes

Browse the closest code-family pages when the same fault pattern often shows up nearby.

Next Steps

Move from the code to a diagnosis path, then into repair pricing once the fault is confirmed.