P0094
PowertrainFuel Systemhigh severityFuel System Leak Detected - Small Leak
What P0094 Means
The engine computer detected a small leak in the high-pressure fuel system. This can cause hard starting, rough running, and reduced power.
Symptoms
- Hard starting
- Rough running or misfire
- Reduced engine power
Common Causes
- Leaking fuel injector
- Cracked high-pressure fuel line
- Faulty fuel pressure sensor
- Loose fuel line connection
Diagnostic Steps
- Inspect high-pressure fuel lines for leaks
- Check fuel pressure with a scan tool
- Perform an injector leak-down test
- Repair or replace leaking component
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Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
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SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
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