AutoCodes – MINI – P1446 MINI

P1446 MINI Code - Diagnostic Module Tank Leakage Pump Control Circuit Signal High

Quick Answer

P1446 MINI indicates Diagnostic Module Tank Leakage Pump Control Circuit Signal High. Common causes include Faulty Diagnostic Module Tank Leakage (DMTL), DMTL harness is open or shorted, DMTL circuit poor electrical connection. 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 Diagnostic Module Tank Leakage (DMTL), DMTL harness is open or shorted, DMTL circuit poor electrical connection.
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 Popularity 2,300

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Aug 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1446 MINI Description

OBDII Code P1446 MINI - Diagnostic Module Tank Leakage Pump Control Circuit Signal High - AutoCodes.com — P1446 MINI Code - Diagnostic Module Tank Leakage Pump Control Circuit Signal High

What does this mean?

What are the Possible Causes of the DTC P1446 MINI?

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

How to Fix the DTC P1446 MINI?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1446 MINI code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1446 MINI code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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.