P1449 BMW Code: What To Do When Encountering It
Modern vehicles have advanced diagnostic systems that monitor various components for optimal performance. When a fault is detected, a specific error code is generated to aid technicians in identifying and resolving the issue. In the case of BMW vehicles, one common trouble code is P1449, which is specifically related to the DMTL (Diagnostic Module Tank Leakage) pump.
This article aims to shed light on BMW Code P1449, its symptoms, potential causes, and possible solutions. Moreover, by understanding the underlying factors contributing to this fault code, BMW owners and technicians can effectively diagnose and resolve the issue.
Let’s get started!
P1449 BMW: A Quick Overview
Look over the summary for the BMW P1449 code below!
- Definition: Diagnostic Module Tank Leakage Pump Current Too High
- Severity: Medium
- DIY Skill Level: Intermediate
- Continue To Drive?: Yes
- Estimated Repair Cost: $50 – $400
What Does The P1449 BMW Code Mean?
The BMW code P1449 indicates a fault within the vehicle’s evaporative emission control system, specifically related to the DMTL (Diagnostic Module Tank Leakage) pump. The evaporative emission control system is designed to prevent the release of harmful fuel vapors into the atmosphere, ensuring environmental compliance.
When the DMTL pump malfunctions or fails to operate as intended, it can trigger the P1449 error code. The DMTL pump is responsible for monitoring the fuel tank for leaks and maintaining the proper pressure within the evaporative emission system. Consequently, if the pump detects a leak or a pressure deviation, it signals the vehicle’s engine control module (ECM) and triggers the P1449 code.
Several BMW models are commonly associated with the P1449 code, including the BMW 3 Series, BMW 5 Series, BMW 7 Series, BMW X3, BMW X5, etc. In some cases, the P1449 code may be accompanied by additional codes, which can provide further insights into the specific issue.
Common accompanying codes related to the DMTL pump and evaporative emission control system, include P1447, P0442, P0455, and P0456. These accompanying codes help technicians narrow down the potential causes and pinpoint the specific area of concern within the evaporative emission control system.
How Severe Is The P1449 Code In BMW?
The severity of BMW Code P1449 can be considered moderate. While this fault code indicates a problem within the evaporative emission control system, it typically does not pose an immediate safety risk or cause drivability issues. However, it is important not to overlook or ignore this code.
It is generally okay to continue driving with this code in the short term. Still, to ensure that the vehicle complies with environmental regulations and the evaporative emission control system functions properly, it is recommended to address the P1449 code promptly.
What Are The Signs Of The P1449 BMW Code?
When a BMW vehicle experiences the P1449 code, the following symptoms may be observed:
- Check Engine Light (CEL) illuminated
- Fuel odor
- Difficulty starting the engine
- Decreased fuel efficiency
What Causes The P1449 Code In BMW Vehicles?
The P1449 code in BMW vehicles can be caused by various factors, including:
- Overfill the fuel tank
- Damaged DMTL wiring harness
- Malfunctioning DMTL pump
- Leaks or cracks in the fuel vapor lines
Repair And Diagnosis Of BMW Code P1449
This section provides a guide to diagnose and repair the P1449 code in BMW vehicles. It includes the necessary tools and parts, a step-by-step procedure, and information on DIY repair level and estimated costs. However, if you are unsure or lack experience, it is recommended to consult a professional mechanic or BMW dealership for accurate diagnosis and resolution.
Essential Tools And Parts
In order to effectively identify and rectify the C1109 code in Nissan vehicle, you will need the subsequent tools and components:
Step-by-Step Procedure
1. Code retrieval
Use an OBD-II scanner to retrieve the P1449 code and any accompanying codes.
2. Check for blown fuses
- Inspect the fuses related to the evaporative emission control system.
- Replace any blown fuses, as they may indicate a bad DMTL pump or a broken wire shorted to ground.
3. Inspect for vacuum leaks
- Check the fuel vapor lines for vacuum leaks.
- Look for cracked or disconnected hoses, loose fittings, or damaged connectors.
4. Replace OEM gas cap (if applicable)
- If your BMW has the “green” OEM gas cap, replace it with the blue gas cap.
- The blue cap provides a tighter seal and may help resolve the issue.
5. Check the DMTL pump
- Test the DMTL pump’s functionality using a multimeter.
- Assess the pump’s functionality and determine if it needs replacement.
- Ensure the rubber grommet on the old pump is used when reinstalling the pump.
6. Clear the code and test drive
- Once repairs are made, use the OBD-II scanner to clear the BMW C1449 code and any associated trouble codes.
- Take the vehicle for a test drive to verify if the car’s performance is back on track or not.
Note:
- The DMTL pump is usually located at the rear right side of the vehicle, positioned behind the wheel well liner. To find the exact location of the DMTL pump, it is advisable to refer to the manual.
Read more: BMW Fault Codes: FREE Comprehensive OBD1 And OBD2 Codes List
DIY Repair Level And Estimated Costs
Repairing the P1449 code demands intermediate to advanced DIY skills. If you’re confident in your experience with electrical and fuel systems, you can proceed. However, if you’re uncertain or lack relevant experience, it’s recommended to consult an expert mechanic or BMW dealership. They are equipped with specialized knowledge, tools, and resources for proper diagnosis and repair.
Estimated costs for the main repair tasks associated with the P1449 code may vary depending on factors such as the BMW model, location, and source of parts. Here is a table listing approximate costs:
| Repair Task | Estimated Cost |
| Wiring and connector repair | $50 – $150 |
| Gas cap replacement | $30 – $70 |
| DMTL pump replacement | $200 – $500 |
Please note that these are rough estimates, and actual costs may differ. Consult a trusted mechanic or BMW dealership for accurate pricing and to ensure the use of genuine replacement parts. Remember, prioritizing safety and accuracy is crucial when dealing with complex automotive repairs.
Final Thoughts
Ready to conquer the P1449 code in your BMW? With the insights gained, you’re now equipped to diagnose and resolve the issue confidently. Moreover, don’t keep this knowledge to yourself – share it with fellow BMW enthusiasts who may be facing similar challenges.
If you have questions or success stories, we’re all ears in the comments section below. Furthermore, to keep your BMW running smoothly, stay tuned for more expert automotive guides. Hit the road with confidence!
Reference Sources
- New York State Department of Motor Vehicles, Evaporative Emission Control System (EVAP)
- RepairSmith, Why Does My Car Smell Like Gasoline?