P0733: Gear 3 Incorrect Ratio
Can you still drive? Not recommended. Slipping in 3rd gear generates excessive heat that can quickly damage other transmission components. Minimize driving and have it inspected.
What Does P0733 Mean?
Code P0733 means the TCM detected the gear ratio in 3rd gear does not match the expected specification. Third gear is frequently used at moderate speeds and during cruising, so slippage here is very noticeable to the driver. This code requires prompt attention to prevent further transmission damage from heat generated by the slipping clutches.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Worn 3rd gear clutch pack
- Low or degraded transmission fluid
- Sticking shift solenoid
- Worn valve body
- Faulty speed sensor
Symptoms
- Check engine light on
- Slipping in 3rd gear during cruising
- RPM flare during 2-3 upshift
- Loss of acceleration at moderate speeds
- Transmission overheating warning
Diagnostic Steps
- 1Check transmission fluid level and condition
- 2Monitor gear ratios in all gears to determine if problem is isolated to 3rd
- 3Test input and output speed sensors for accuracy
- 4Check shift solenoid operation with scan tool bidirectional control
- 5Perform line pressure test in 3rd gear
- 6Remove transmission pan and inspect for metal debris
Recommended Parts & Tools
transmission fluid
transmission filter kit
shift solenoid
OBD-II scan tool with TCM access
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $250 - $4500 |
| Parts Only (DIY) | $80 - $200 |
| Labor (1-2 hrs @ $100/hr) | $100 - $200 |
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Chat with AI About P0733Commonly Affected Vehicles
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Frequently Asked Questions
Why does my car slip only in 3rd gear?
Each gear uses a specific set of clutch packs and bands. P0733 means the components responsible for 3rd gear are worn or not getting adequate hydraulic pressure, while other gears may still function properly.
Can a shift solenoid cause P0733?
Yes. A sticking or failed shift solenoid can prevent proper hydraulic pressure from reaching the 3rd gear clutch pack, causing slippage and an incorrect ratio code.
Community Fix Reports
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