BMW DTC P0094 – Fuel System Leak Detected – Small Leak
DTC P0094 meaning on BMW
DTC P0094 on a BMW indicates that the Engine Control Module (ECM) has detected a small leak in the fuel system. This code specifically points to a leak in the fuel system that is smaller than what would trigger a DTC P0456 (EVAP system small leak detected) code.
BMW DTC P0094 symptoms
Symptoms of a DTC P0094 on a BMW may include:
- Check Engine Light illuminated
- Decreased fuel efficiency
- Strong fuel odor
- Visible fuel leaks under the vehicle
BMW DTC P0094 causes
The common causes of a DTC P0094 on a BMW include:
- Loose or damaged fuel cap
- Leaking fuel injector
- Cracked or damaged fuel line
- Faulty fuel pressure sensor
BMW DTC P0094 seriousness
While a small fuel system leak may not immediately affect the drivability of the vehicle, it can lead to decreased fuel efficiency and potentially pose a fire hazard. It is important to address this issue promptly to prevent further complications.
How to diagnose DTC P0094 on BMW
To diagnose a DTC P0094 on a BMW, a mechanic may perform the following steps:
- Use a scan tool to read the DTC and freeze frame data
- Inspect the fuel cap for proper sealing
- Check fuel lines and connections for leaks
- Test the fuel pressure sensor for proper operation
How to fix DTC P0094 on BMW
To fix a DTC P0094 on a BMW, the following steps may be taken:
- Tighten or replace the fuel cap if it is loose or damaged
- Repair or replace any leaking fuel injectors or lines
- Replace a faulty fuel pressure sensor
- Clear the DTC and test drive the vehicle to ensure the issue is resolved
How to erase DTC P0094 on BMW
To erase a DTC P0094 on a BMW, a scan tool can be used to clear the code from the ECM’s memory. After clearing the code, it is recommended to test drive the vehicle to ensure the issue has been resolved and the code does not return.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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