OBD2 Code P2803: Fuel System - Pressure/Flow
Fuel pressure or flow rate out of specification.
Detected Root Component
Powertrain Component
Observed Symptoms
- Engine light on (MIL/Check Engine)
- Unable to start
- Engine stalling
- Loss of engine power
- Hesitation when accelerating
Possible Causes
- Faulty fuel pump
- Faulty pressure regulator
- Clogged or faulty injector
- Clogged fuel filter
- Defective sensor
Tools Required
Interactive Diagnostic
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Parts likely to be the cause (Moteur (général))
Moteur (général)
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Frequently asked questions about code P2803
What does code P2803 mean? ▾
OBD2 Code P2803: Fuel System - Pressure/Flow. Fuel pressure or flow rate out of specification.
What are the symptoms of code P2803? ▾
Code P2803 may cause: Engine light on (MIL/Check Engine), Unable to start, Engine stalling, Loss of engine power. The intensity of these symptoms varies depending on the vehicle and driving conditions.
What causes code P2803? ▾
The most common causes of code P2803 are: Faulty fuel pump, Faulty pressure regulator, Clogged or faulty injector, Clogged fuel filter. A proper OBD2 diagnostic will pinpoint the exact cause.
Is it serious to drive with code P2803? ▾
Yes, code P2803 is critical (Critical). Avoid driving and consult a professional promptly to prevent major damage.
How do I fix code P2803? ▾
Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Faulty fuel pump, Faulty pressure regulator, Clogged or faulty injector, Clogged fuel filter. Difficulty: Medium · Estimated time: 30-60min.