What does code P0233 mean?
Intermittent signal detected in the secondary fuel pump circuit
OBD-II Code
P0233 — Fuel Pump Secondary Circuit Intermittent
Intermittent signal detected in the secondary fuel pump circuit
Common symptoms
- Intermittent stalling
- hesitation
Possible causes
- Intermittent contact
- loose wiring
- faulty relay
Initial recommendation
Secure harness, test relay and monitor voltage during operation.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0233 with your vehicle's actual symptoms for more complete diagnostic guidance.
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