P0733 2002 Nissan Altima Sedan Code - 3rd. 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 (3rd) supposed by TCM, the slip ratio will be more than normal. Common causes include Low transmission fluid level, Dirty transmission fluid, 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
- P0733 2002 Nissan Altima Sedan indicates 3rd. Gear Malfunction.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, 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.
Code P0733 2002 Nissan Altima Sedan Description
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 (3rd) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.
What are the Possible Causes of the DTC P0733 2002 Nissan Altima Sedan?
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit
How to Fix the DTC P0733 2002 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.
Code Tech Notes
There is a Factory Service Bulletin for the 2002 Nissan Altima:
2002 Nissan Altima Factory Service Bulletin OBDII Code P0733
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0733 2002 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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Frequently Asked Questions about P0733 2002 Nissan Altima Sedan Code
1. What does OBDII code P0733 on a 2002 Nissan Altima Sedan mean?
- OBDII code P0733 indicates a problem with the third gear ratio in the transmission.
2. What are common symptoms of a 3rd gear malfunction in a 2002 Nissan Altima Sedan?
- Common symptoms include harsh shifting into third gear, slipping or delayed engagement in third gear, and the transmission staying in third gear.
3. What are possible causes of OBDII code P0733 in a 2002 Nissan Altima Sedan?
- Possible causes include low transmission fluid levels, a faulty transmission solenoid, a worn clutch, or internal transmission damage.
4. How can I diagnose the cause of OBDII code P0733 in my 2002 Nissan Altima Sedan?
- Diagnosing the issue requires a professional scan tool to monitor the transmission's behavior and perform tests to pinpoint the exact cause, which may involve checking fluid levels and inspecting components.
5. Can driving with OBDII code P0733 in a 2002 Nissan Altima Sedan cause further damage?
- Continuing to drive with this code may cause additional damage to the transmission, leading to more costly repairs in the long run.
6. How can I repair OBDII code P0733 on a 2002 Nissan Altima Sedan?
- Repair options include checking and topping up transmission fluid, replacing a faulty solenoid or clutch, or rebuilding the transmission if internal damage is severe.
7. Is it safe to continue driving my 2002 Nissan Altima Sedan with OBDII code P0733?
- It is not recommended to drive the vehicle with this code as it can lead to further transmission damage and potential safety hazards on the road.
8. How much does it cost to repair OBDII code P0733 on a 2002 Nissan Altima Sedan?
- The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred to a few thousand dollars, especially if internal transmission components need replacement.
9. Can a DIY enthusiast fix OBDII code P0733 in a 2002 Nissan Altima Sedan?
- DIY repairs for this code can be challenging due to the complexity of the transmission system, so it is recommended to consult with a professional mechanic for accurate diagnosis and proper repair.
10. Will resetting the OBDII code P0733 in a 2002 Nissan Altima Sedan make the problem go away?
- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the third gear malfunction. It is crucial to address the root cause of the problem for a lasting solution.
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