P0093 — Fuel System Leak Detected - Large Leak

OA fault code doesn’t yet mean the unit or sensor itself is faulty: often it’s the plug and connector leading to it.

Possible causes

• Leak in the high-pressure lines or at the injectors
• Faulty pressure relief valve

What you can do yourself

1. Stop the engine and inspect it for fuel leaks — there is a fire risk.
2. Don’t drive until you find the leak.

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The explanation comes from the error code reference in the AvtoElektrik PRO app.