Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the car's system that checks for leaks in the gas tank. It's like a switch isn't working right, which can make it hard to know if there's a leak.
The P1452 code is triggered when the Diagnostic Module Tank Leakage (DM TL) detects a high voltage in the switching solenoid control circuit.
The DM TL system is responsible for checking the fuel system for leaks. It uses a solenoid to control the flow of air and pressure in the system. If the control circuit for this solenoid is reading a higher voltage than expected, the system cannot accurately test for leaks, leading to the P1452 code.
• Check Engine Light is on
• Possible fuel smell
• Failed emissions test
• Faulty DM TL solenoid
• Wiring issues such as open or short circuits
• Faulty control module
DM TL: Diagnostic Module Tank Leakage
Solenoid: A device that uses an electric current to create a magnetic field and control a mechanism
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connectors to the DM TL solenoid
• Test the DM TL solenoid for proper operation
• Repair or replace damaged wiring
• Replace the DM TL solenoid if faulty
• Clear the code and test the system
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• BMW 3 Series
• BMW 5 Series
• BMW X5
• Regularly inspect fuel system components
• Ensure all connectors are secure
• Perform routine maintenance checks
Sensor Issue
• Do not ignore the Check Engine Light
• Have the vehicle inspected by a professional
• Avoid overfilling the fuel tank
Check with the vehicle manufacturer for specific warranty coverage on emissions-related components.
This code is commonly associated with BMW vehicles and is related to the evaporative emissions system.
Moderate – While it may not cause immediate drivability issues, it can affect emissions performance and should be addressed soon.
Driving with a persistent Check Engine Light can lead to further emissions issues and potentially fail emissions testing.
• Vehicle must be running
• Fuel tank should be between 15% and 85% full
The DM TL solenoid is typically located near the fuel tank or in the engine compartment.
Q: Can I drive with a P1452 code?
A: Yes, but it's best to get it checked soon as it can affect emissions.
Q: Will this code cause my car to fail an emissions test?
A: Yes, a P1452 code can cause your vehicle to fail an emissions test.
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