Engine-Codes - Bmw - P1449 BMW

P1449 BMW - Diagnostic Module Tank Leakage Pump Too High

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P1449 BMW Possible Causes

  • Faulty Diagnostic Module Tank Leakage (DMTL) Pump
  • Diagnostic Module Tank Leakage Pump harness is open or shorted
  • Diagnostic Module Tank Leakage Pump circuit poor electrical connection

How is the P1449 BMW code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Tech Notes





User Submitted Video

What is the cost to diagnose the P1449 BMW code

Labor: 1.0

The cost to diagnose the P1449 BMW code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
How much do you know about cars?

Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge

Play Now

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1449 BMW Meaning

The evaporative system monitoring permits the detection of leaks in the evaporative system with a diameter of 0.02 inches and up. By means of a Diagnostic Module Tank Leakage (DMTL), an electrically actuated pump located at the atmospheric connection of the evaporative canister, a pressure test of the evaporative system is performed.
During the Reference Leak Measurement, the electrically actuated pump delivers through the reference restriction. The engine-management system measures the pump's electrical current consumption in this section.
During the Leak Measurement, the electrically actuated pump delivers through the charcoal canister into the fuel-tank system. The pressure in the evaporative system may be up to 2.5 kPa depending on the fuel level in the tank. The engine-management system measures the pump's electrical current consumption. A comparison of the currents of the reference leak measurement and the leak measurement is an indication of the leakage in the tank.

More Information

Need more information on how to fix the P1449 BMW code?
Get Access to Factory Service Manuals

Need more help?

Get the P1449 Bmw code diagnosed by a professional: Find a repair shop in your area