AutoCodes – MINI – P0732 MINI

P0732 MINI Code - Gear 2 Incorrect ratio

Quick Answer

This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by Transmission Control Module (TCM) as follows: Torque converter slip ratio = A x C/B A: Output shaft revolution signal from revolution sensor B: Engine speed signal from Engine Control Module (ECM) C: Gear ratio determined as gear position which TCM supposes If the actual gear position is higher than the position (2nd) supposed by TCM, the slip ratio will be more than normal. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Shift Solenoids. 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: P0732 MINI indicates Gear 2 Incorrect ratio.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Shift Solenoids.
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 3,072

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0732 MINI Description

This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by Transmission Control Module (TCM) as follows:
Torque converter slip ratio = A x C/B
A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from Engine Control Module (ECM)
C: Gear ratio determined as gear position which TCM supposes
If the actual gear position is higher than the position (2nd) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.

OBDII Code P0732 MINI - Gear 2 Incorrect ratio - AutoCodes.com — P0732 MINI Code - Gear 2 Incorrect ratio

What does this mean?

What are the Possible Causes of the DTC P0732 MINI?

Low transmission fluid level
Dirty transmission fluid
Faulty Shift Solenoids
Shift Solenoids harness is open or shorted
Shift Solenoids circuit poot electrical connection
Transmission mechanical problems
Transmission hydraulic control circuit

How to Fix the DTC P0732 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 does this mean?

Code Tech Notes

Start by inspecting the transmission fluid level and condition, and change fluid if necessary.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0732 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.

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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 P0732 MINI Code

1. What does the OBDII code P0732 mean on a MINI?

P0732 indicates that the transmission control module (TCM) has detected an incorrect gear ratio in 2nd gear, suggesting a potential issue with the transmission or related components.

2. What are the common symptoms of the P0732 code in a MINI?

Symptoms may include harsh shifting, slipping in 2nd gear, poor acceleration, transmission overheating, or the vehicle being stuck in limp mode.

3. What causes the P0732 code to be triggered?

Common causes include low or dirty transmission fluid, a faulty shift solenoid, damaged transmission bands, a malfunctioning torque converter, or internal transmission damage.

4. Can driving with the P0732 code damage my MINI?

Yes, continuing to drive with this code can lead to further transmission damage or overheating, which could result in costly repairs.

5. How can I diagnose the P0732 code on my MINI?

Start by checking the transmission fluid level and condition. Then, use a scan tool to monitor transmission data, inspect the shift solenoids, and perform a pressure test on the transmission.

6. Is low transmission fluid a common cause of the P0732 code?

Yes, low or contaminated transmission fluid can cause improper gear ratios by affecting hydraulic pressure and gear engagement.

7. How do I fix the P0732 code on a MINI?

Repairs can include topping off or replacing transmission fluid, replacing a faulty shift solenoid, repairing damaged transmission components, or in severe cases, rebuilding the transmission.

8. How much does it cost to repair the P0732 code on a MINI?

Costs vary depending on the issue. A fluid change might cost $100-$250, while repairing or replacing internal transmission components can range from $1,000 to $3,500 or more.

9. Can a faulty speed sensor cause the P0732 code?

Yes, if the input or output speed sensor provides incorrect data to the TCM, it could trigger the P0732 code.

10. Do I need to replace the entire transmission to fix the P0732 code?

Not always. Many P0732-related issues can be resolved by addressing specific components, such as solenoids or sensors, without requiring a full transmission replacement.