P0733 Mazda Code - Third Gear Error
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 Mazda indicates Third Gear Error.
- 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 Mazda 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 Mazda?
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit
How to Fix the DTC P0733 Mazda?
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
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0733 Mazda 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 P0733 Mazda code?
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Need Help with the Code?
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Frequently Asked Questions about P0733 Mazda Code
1. What does the OBDII code P0733 mean on a Mazda?
P0733 indicates a "Third Gear Ratio Error," meaning the transmission control module (TCM) has detected an issue with the ratio in third gear not matching expected values.
2. What are common symptoms of the P0733 code in a Mazda?
Symptoms may include difficulty shifting into third gear, slipping gears, reduced fuel efficiency, a check engine light, and poor overall transmission performance.
3. What causes the P0733 code on a Mazda?
Common causes include low or dirty transmission fluid, faulty shift solenoids, a worn or damaged transmission, or issues with the transmission control module (TCM).
4. Can low transmission fluid cause the P0733 code?
Yes, low or contaminated transmission fluid can cause improper gear ratios and trigger the P0733 code.
5. How is the P0733 code diagnosed on a Mazda?
A mechanic will check the transmission fluid level and condition, scan for additional codes, inspect shift solenoids, and test the transmission for mechanical issues.
6. Can driving with the P0733 code damage my Mazda further?
Yes, driving with this code can worsen transmission damage if the underlying issue is not addressed promptly.
7. How do you fix the P0733 code on a Mazda?
Repairs may involve replacing or repairing shift solenoids, flushing and refilling transmission fluid, reprogramming or replacing the TCM, or rebuilding the transmission if necessary.
8. How much does it cost to fix a P0733 code on a Mazda?
Repair costs vary widely, ranging from $100–$300 for fluid changes or solenoid repairs, to $2,000 or more for a transmission rebuild or replacement.
9. Can I reset the P0733 code without fixing the issue?
While the code can be cleared temporarily, the issue causing it will likely trigger the code again until repaired.
10. Is the P0733 code specific to Mazda vehicles?
No, P0733 is a generic OBDII code that can appear on any vehicle, but the diagnosis and repair may vary depending on the make and model.
Discuss the causes and fixes for P0733 Mazda OBDII Code
-
04 Mazda 3 sets po733 and 734 every drive cycle sets at light no engine dtcs
Trans simply goes into neutral every time it shifts to 3rd then it looks for fourth with no engagement at all . No debris in pan .I changed fluid at first time of trouble but no help
About 130k on vehicle -
Next step is to inspect the shifting solenoids
inside the transmission, but with the amount of mileages on you Mazda, you
should consider rebuilding the transmission. -
Hi
I have 3 codes:
P0733
P0734
P0762 (Shift Solenoid "C" Stuck On)It the P0762 the cause of the other 2 codes? Are they different problems?
It is a 115K car (Mazda 3)
Same symptoms as Ken Harrelson
-
Which solenoid would control gear 3? P0733-ff (Transmission Gear #3 Incorrect Ratio)
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