Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the part that checks if the gas tank is leaking. It's like a sensor that makes sure the gas tank isn't letting gas fumes escape. The computer thinks this sensor isn't working right.
The P1445 code is triggered when the Engine Control Module (ECM) detects a low voltage condition in the circuit that controls the Diagnostic Module Tank Leakage (DM TL) pump.
The DM TL system is responsible for checking the fuel system for leaks by pressurizing the system and monitoring for pressure drops. The P1445 code indicates that the control circuit for the DM TL pump is experiencing a low voltage condition, which could be due to electrical issues such as a short circuit, poor connection, or a failed pump.
• Check Engine Light is on
• Failed emissions test
• Possible fuel odor due to leaks
• Faulty DM TL pump
• Wiring issues such as short or open circuits
• Poor electrical connections
• Faulty ECM
DM TL: Diagnostic Module Tank Leakage
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the P1445 code.
• Inspect the wiring and connectors to the DM TL pump for damage.
• Test the DM TL pump for proper operation.
• Check the ECM for any faults.
• Repair or replace damaged wiring or connectors.
• Replace the DM TL pump if faulty.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• BMW 3 Series
• BMW 5 Series
• Mini Cooper
• Regularly inspect and maintain the fuel system.
• Ensure all electrical connections are secure and free from corrosion.
• Perform scheduled vehicle maintenance.
Sensor Issue
• Do not ignore the Check Engine Light; get it checked promptly.
• If experiencing fuel odors, have the vehicle inspected for leaks immediately.
Check with your vehicle manufacturer; emissions-related components may be covered under warranty.
This code is commonly found in vehicles with advanced emissions control systems, particularly in European models.
Moderate – Addressing this issue is important for emissions compliance and vehicle safety.
Driving with a malfunctioning emissions system can lead to increased pollution and may be illegal in some areas.
• Vehicle must be running
• Fuel system should be pressurized
The DM TL pump is typically located near the fuel tank, often mounted on or near the charcoal canister.
Q: Can I drive my car with a P1445 code?
A: You can drive short distances, but it's best to fix the issue soon to avoid emissions problems.
Q: Will a P1445 code affect my car's performance?
A: It may not affect performance directly, but it can cause emissions test failures and possible fuel odors.
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