P0093 on Genesis
Fuel System Leak Detected - Large Leak
P0093 on Genesis vehicles indicates fuel system leak detected - large leak. Au7o has documented this code across 1 Genesis model — most commonly on G70. This code indicates the engine computer detected a large leak in the fuel system, typically a significant drop in fuel rail pressure that it cannot maintain. It is common on high-pressure direct-injection and diesel systems, where the computer watches commanded versus actual fuel pressure. A large pressure loss suggests fuel is escaping or the system cannot build pressure. This can cause hard starting, loss of power, stalling, and is a potential fire hazard if fuel is leaking externally.
Common Causes of P0093
- •Leaking or cracked high-pressure fuel line or fitting
- •Faulty fuel injector (leaking or stuck open)
- •Failed high-pressure fuel pump
- •Damaged or leaking fuel pressure regulator
- •Loose or degraded fuel system seals/O-rings
- •Faulty fuel rail pressure sensor
- •Restricted fuel supply preventing pressure buildup
P0093 on Genesis by Model
Genesis G70(1 issue)
- High-Pressure Fuel Pump Failure Causing Power Loss (Recall 24V-528 / 023G)2019-2023
The fuel control valve inside the high-pressure fuel pump (HPFP) can stick or allow excess fuel into the system, producing an air/fuel mixture that runs too rich. This causes a reduction or loss of motive power at low speeds, rough running, and check-engine warnings — increasing crash risk. Genesis recalled certain 2019-2023 G70 vehicles under NHTSA campaign 24V-528 (Genesis recall 023G); owner letters mailed September 2024. Many owners also reported the symptom (hesitation/near-stall when driving off within ~30 seconds of a cold start) before the formal recall. The remedy is an ECM software update plus inspection and replacement of the HPFP assembly as necessary, performed free of charge under the recall.
Looking for P0093 on a different make?
View P0093 across all makes →Frequently Asked Questions
What does P0093 mean on Genesis?▼
P0093 stands for "Fuel System Leak Detected - Large Leak." This code indicates the engine computer detected a large leak in the fuel system, typically a significant drop in fuel rail pressure that it cannot maintain. It is common on high-pressure direct-injection and diesel systems, where the computer watches commanded versus actual fuel pressure. A large pressure loss suggests fuel is escaping or the system cannot build pressure. This can cause hard starting, loss of power, stalling, and is a potential fire hazard if fuel is leaking externally. On Genesis specifically, this code is documented across 1 model.
What causes P0093 on Genesis vehicles?▼
Common causes on Genesis: Leaking or cracked high-pressure fuel line or fitting, Faulty fuel injector (leaking or stuck open), Failed high-pressure fuel pump, Damaged or leaking fuel pressure regulator, Loose or degraded fuel system seals/O-rings. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0093 on a Genesis?▼
Repair costs vary widely depending on the root cause and specific Genesis model.
Which Genesis models have P0093 documented?▼
Au7o has documented P0093 on 1 Genesis model: G70.