P0090
Fuel Pressure Regulator 1 Control Circuit
Generic code
Fuel and Air Metering
High severity
Hard repair
Free on OBD DashX
Want real-world data on P0090?
See which problems come with P0090, how often it shows up in other vehicles, and how to fix it — step by step.
- Real-world fix data
- How often it happens
- Step-by-step repairs
What P0090 means
- The fault code P0090 indicates that there is an issue with the control circuit or an open circuit in the fuel pressure regulator for the first fuel injector. This may cause the engine to run poorly or not start at all.
Possible symptoms
- Illuminated check engine light
- Engine may not start
- Engine runs poorly or stalls
- Decreased fuel efficiency
- Hesitation or sluggish acceleration
Possible causes
- Malfunctioning fuel pressure regulator
- Faulty wiring or connections in the circuit
- Loose or corroded electrical connections
- Failed engine control module (ECM)
Related parts
- Fuel Pressure Regulator: Fuel pressure regulator controls the fuel pressure and returns any excess fuel to the tank. Problems lead to engine misfire, poor fuel economy & poor acceleration
Possible solutions
- Replace the fuel pressure regulator
- Check and repair any damaged wiring or connections
- Tighten or clean any loose or corroded electrical connections
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0090 on OBD DashX
Real-world causes, how often this code shows up, and the fix — step by step.
Open P0090 No sign-up needed · available in 10 languagesScan your own car
Read and clear fault codes, live data and service resets with the CaRPM app.