r/F30 • u/Mikey_The_Nomad 2016 340i xdrive • 13h ago

Error code

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Does anyone know what it could be I changed fuses and everything else is leading to EKPM

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u/HellfoxRules Distinguished Contributor 8h ago

DTC, 11B014 indicates "Electric fuel pump, activation: Short circuit." You are on the right track by focusing on the EKPM (Fuel Pump Control Module), as this code directly points to an electrical breakdown in the low-pressure fuel pump delivery circuit.

Because you have already verified the fuses, the issue almost always stems from one of three primary failure points.

"Melted EKPM Connector Pins" The EKPM regulates pump speed by pulsing voltage (PWM), which generates massive heat. Over time, this thermal load softens or melts the electrical connector.

Unplug the harness from your EKPM located behind the rear seat bolster on the passenger side, just lift straight up on the bolster first to unhook and it will come right off, there may be a 10mm bolt holding it at the bottom. Inspect the plastic plug and pins for any signs of charring, discoloration, or melted plastic. These modules are known to overheat due to there location behind the seat bolster. You can purchase an upgraded EKPM 3, which has a small Noctua fan built into it, to keep the module cool.

"Internal EKPM Short Circuit" The internal transistors on the EKPM circuit board frequently burn out and short to ground. If the fuses are completely intact but the module cannot process activation commands, the board itself has suffered an internal short.

If module needs to be replaced. Note that a brand new or replacement EKPM must be coded/programmed to your F30's VIN, using software like ISTA, E-Sys, or "ProTool" to function correctly.

"Failing Low-Pressure Fuel Pump (LPFP)" As the fuel pump inside your gas tank ages, its internal motor creates high resistance and starts drawing excessive amperage. This current spike triggers the short circuit code and is the root cause that destroys the EKPM. Also check the connector at the LPFP for any signs of burnt pins or melting at the connector.

If you swap the EKPM without checking the pump, a failing pump can instantly fry your new module. If possible, use a diagnostic tool "Protool" to check the amperage draw of the pump, or manually power the pump to hear if it primes cleanly without dragging.

If you want to diagnose this yourself, you will need the Bimmergeeks Protool Master License. This will allow you to diagnose the issue, and code the new EKPM.

Having the ProTool Master License is the best-case scenario. It unlocks full bi-directional controls, which will allow you to actually diagnose the issue, without guessing. You don't just have to watch live data; you can actively command the car to test the circuits for you.

Here is how to use Protool Master License to run a guided electrical test and isolate the short circuit.

  1. Actively Force-Test the Pump

Instead of waiting for the car to try and crank, use your Master License to manually send power to the circuit:

  1. Open ProTool and select "Drivetrain > Fuel Pump Module (EKP)".
  2. Go to "Activations / Component Testing".
  3. Select the option to "Activate Fuel Pump" (sometimes listed as Fuel Pump PWM or On/Off).

  4. The Test: Listen closely to the rear seat area.

    • If you hear a click but no pump hum, followed by an immediate connection drop or an error pop-up in ProTool, the EKPM's internal transistor is blown and shorted.
    • If the pump makes a loud grinding, straining, or binding noise, the pump motor itself is physically seizing, drawing too much current, and forcing the EKPM to shut down to prevent a fire.

  5. Check "Info Memory" (Shadow Codes)

Standard diagnostic tools only read active errors. With your Master License, ProTool can pull "Shadow Codes / History Codes" from the DME and EKPM.

  • Go to "DME > Fault Codes > Read Info Memory" (or History).
  • Look for old codes like "Low pressure fuel pump, current too high" or thermal warnings. If you see historical over-current codes, it proves the "Low-Pressure Fuel Pump (LPFP)" inside the gas tank has been dying for a while and likely just killed the EKPM.
  1. If you decide to temporarily swap a used EKPM to test:

If you have the Master License, you can grab any compatible used EKPM (from an F30, F10, F22, etc.) at a junkyard or online, plug it in, go to "Coding > Factory Code", and immediately know if your module was the culprit. You can use a used module for testing, but I recommend replacing with a new module.

The videos below will give you some help with coding and diagnosis. The Protools Master License app may seem like an expensive investment, but you can use it to diagnose any issue with your BMW, as well as any needed coding.

You will need a Protools Master License, and a wireless Bluetooth OBD 2 adpater, to connect to the app.

Bimmergeeks Protools

Veepeak OBDCheck BLE Bluetooth OBD II Scanner for iOS & Android

You NEED This BMW Tool! How to Use Bimmergeeks ProTool | Diagnostics & Coding

How To Replace And Code EKPM Fuel Pump Module For BMW using Protool

SYMPTOMS OF A BAD EKPM MODULE (FUEL PUMP CONTROL MODULE CAUSING NO START)