OBD-II code · Powertrain (generic)
P0194 Fuel Rail Pressure Sensor Circuit Intermittent
The ECU detects intermittent signal dropouts on the fuel rail pressure sensor. Loose connector, chafed wiring or sensor failing under vibration/heat.
Is it safe to drive with P0194?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyConnector loose
- PossibleWiring chafed
- Less likelyConnector with intermittent contact under vibration
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Likely to fail
- Parts involved
- Fuel Rail Pressure Sensor, Sensor Connector
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.