AutoCodes – Nissan – P0732 2003 Nissan Altima Sedan

P0732 2003 Nissan Altima Sedan Code - 2nd. Gear Malfunction

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 2003 Nissan Altima Sedan indicates 2nd. Gear Malfunction.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 9,839
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0732 2003 Nissan Altima Sedan 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 2003 Nissan Altima Sedan - 2nd. Gear Malfunction - AutoCodes.com
P0732 2003 Nissan Altima Sedan Code - 2nd. Gear Malfunction

What are the Possible Causes of the DTC P0732 2003 Nissan Altima Sedan?

  • 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 2003 Nissan Altima Sedan?

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 P0732 2003 Nissan Altima Sedan 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 2003 Nissan Altima Sedan Code

1. What does the OBDII code P0732 mean for a 2003 Nissan Altima Sedan?

P0732 indicates a "2nd Gear Ratio Incorrect" fault, meaning the transmission is experiencing issues maintaining the correct gear ratio in second gear.

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

Symptoms include slipping in second gear, harsh shifting, hesitation when accelerating, or the transmission staying in limp mode.

3. What causes the P0732 code in a 2003 Nissan Altima?

Common causes include low or dirty transmission fluid, a faulty shift solenoid, damaged transmission components, or issues with the transmission control module (TCM).

4. Can low transmission fluid cause the P0732 code?

Yes, low or degraded transmission fluid can lead to insufficient hydraulic pressure, causing incorrect gear ratios and triggering the P0732 code.

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

Start by checking the transmission fluid level and condition. Then, inspect the shift solenoids, wiring, and TCM for faults. A professional scan tool can provide detailed diagnostic data.

6. Is the P0732 code safe to drive with?

Driving with this code is not recommended as it can cause further transmission damage, reduce performance, and potentially leave you stranded.

7. How do I fix the P0732 code on a 2003 Nissan Altima?

Repairs may involve replacing or repairing the shift solenoid, flushing and refilling transmission fluid, or addressing internal transmission damage.

8. Can a faulty shift solenoid trigger the P0732 code?

Yes, a malfunctioning shift solenoid can disrupt gear shifting and lead to an incorrect second gear ratio, causing the P0732 code.

9. How much does it cost to repair a P0732 code on a 2003 Nissan Altima?

Repair costs vary depending on the issue. A transmission fluid flush may cost $100-$200, while solenoid replacement or internal transmission repairs could cost $500-$2,500 or more.

10. Will updating or reprogramming the transmission control module fix the P0732 code?

Reprogramming the TCM may resolve the issue if the problem stems from outdated software, but this is only effective in specific cases.

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