P1446 MINI Code - Diagnostic Module Tank Leakage Pump Control Circuit Signal High
Quick Answer
The P1446 MINI code indicates a problem with the tank leakage pump control circuit signal being too high. Common causes include Faulty Tank Leakage Pump: The pump itself may be malfunctioning, causing the control circuit signal to read high, Wiring Issues: Damaged or corroded wiring in the control circuit can lead to a high signal reading, Faulty Sensor: A malfunctioning sensor that reads the signal from the tank leakage pump control circuit can trigger this code. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1446 MINI indicates Diagnostic Module Tank Leakage Pump Control Circuit Signal High.
- Common causes
- Common causes include Faulty Tank Leakage Pump: The pump itself may be malfunctioning, causing the control circuit signal to read high, Wiring Issues: Damaged or corroded wiring in the control circuit can lead to a high signal reading, Faulty Sensor: A malfunctioning sensor that reads the signal from the tank leakage pump control circuit can trigger this code.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1446 MINI Description
The P1446 MINI code indicates a problem with the tank leakage pump control circuit signal being too high. This code is typically associated with the evaporative emission control system, which is responsible for capturing and storing fuel vapors from the fuel tank to prevent them from being released into the atmosphere. The tank leakage pump control circuit is a crucial component of this system, as it controls the operation of the pump that pressurizes the fuel tank to check for leaks.
Common Causes of P1446 MINI
- Faulty Tank Leakage Pump: The pump itself may be malfunctioning, causing the control circuit signal to read high.
- Wiring Issues: Damaged or corroded wiring in the control circuit can lead to a high signal reading.
- Faulty Sensor: A malfunctioning sensor that reads the signal from the tank leakage pump control circuit can trigger this code.
- Vacuum Leaks: Any leaks in the vacuum system connected to the evaporative emission control system can also lead to this issue.
- ECM Malfunction: A problem with the Engine Control Module (ECM) can sometimes cause false readings and trigger this code.
Symptoms of P1446 MINI
- Check Engine Light: The most common symptom associated with this code is the illumination of the Check Engine Light on the dashboard.
- Poor Fuel Economy: A malfunctioning evaporative emission control system can lead to decreased fuel efficiency.
- Strong Fuel Smell: A leak in the fuel vapor system can result in a strong fuel smell inside and outside the vehicle.
- Rough Idle: In some cases, a faulty tank leakage pump control circuit can cause the engine to idle roughly or stall.
How to Fix P1446 MINI
- Diagnose the Issue: Use a diagnostic scanner to read the code and perform further testing to determine the exact cause of the high signal reading.
- Inspect Wiring and Connections: Check the wiring and connections in the tank leakage pump control circuit for any damage or corrosion.
- Test the Tank Leakage Pump: Test the tank leakage pump to ensure it is functioning properly and replace it if necessary.
- Replace Faulty Sensor: If the sensor reading the control circuit signal is faulty, replace it with a new one.
- Clear the Code: After making the necessary repairs, clear the code from the vehicle's computer to reset the Check Engine Light.
Cost to Fix P1446 MINI
The cost of repairing a P1446 MINI code can vary depending on the specific cause of the issue and the labor rates in your area. Generally, the parts needed for this repair, such as a new tank leakage pump or sensor, can range from $100 to $300. Labor costs can add an additional $100 to $300, bringing the total repair cost to approximately $200 to $600. It is important to keep in mind that these are rough estimates and actual costs may vary. Be sure to consult with a qualified mechanic for an accurate diagnosis and repair quote.
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Frequently Asked Questions about P1446 MINI Code
1. What does the OBDII code P1446 mean on a MINI?
P1446 indicates a problem with the Diagnostic Module Tank Leakage (DMTL) pump control circuit, specifically that the signal is reading higher than expected.
2. What are the common symptoms of code P1446 in a MINI?
Symptoms may include an illuminated check engine light, failed emissions tests, and potential fuel odor due to an EVAP system issue.
3. What causes the P1446 code to appear on a MINI?
Common causes include a faulty DMTL pump, damaged wiring or connectors in the pump control circuit, or issues with the EVAP system components.
4. Can a loose gas cap trigger the P1446 code?
While a loose gas cap can cause EVAP system issues, it is unlikely to trigger P1446 directly, as this code is specific to the DMTL pump control circuit.
5. How do you diagnose the P1446 code on a MINI?
Diagnosis involves checking the DMTL pump for functionality, inspecting wiring and connectors for damage, and testing the EVAP system for leaks.
6. Can you drive with the P1446 code on a MINI?
While the vehicle may remain drivable, ignoring the code can lead to emissions problems and potentially damage the EVAP system further.
7. How is the P1446 code fixed on a MINI?
Repairs typically involve replacing the faulty DMTL pump, repairing damaged wiring or connectors, or addressing EVAP system leaks.
8. Is the DMTL pump expensive to replace on a MINI?
The cost of replacing a DMTL pump varies, but it is generally affordable compared to other EVAP system repairs, with labor costs depending on your location.
9. Will clearing the P1446 code fix the problem on a MINI?
Clearing the code without addressing the underlying issue will not resolve the problem and may cause the code to reappear.
10. How can you prevent the P1446 code from occurring again on a MINI?
Regular maintenance of the EVAP system, ensuring wiring and connectors are intact, and promptly addressing EVAP-related issues can help prevent this code.
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