Gear 2 Incorrect Ratio
What does P0732 mean?
The P0732 code means the vehicle's onboard diagnostic system has detected: Gear 2 Incorrect Ratio. This is a critical severity code.
Common Symptoms
- Check Engine Light illuminated
- Slipping in second gear
- RPM flare during 1-2 upshift
- Harsh 2-3 shift
- Vehicle may skip second gear
Probable Causes (Ranked by Likelihood)
- Worn second gear clutch pack or band Very High
- Faulty shift solenoid affecting second gear High
- Low line pressure in second gear circuit Moderate
- Valve body malfunction Low
Step-by-Step Diagnostic Procedure
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Monitor gear ratio in second gear using input and output speed sensors
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Check shift solenoids that control second gear engagement
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Perform a line pressure test in second gear
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Check transmission fluid for burnt smell and metal particles
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Internal transmission inspection or rebuild may be needed
Frequently Asked Questions
Can I drive with code P0732?
Do not drive. An incorrect gear ratio indicates the transmission is slipping or not engaging properly. Continued driving can cause catastrophic transmission failure.
Does P0732 mean I need a new transmission?
Not always, but often. If the cause is a worn clutch pack or band, a transmission rebuild or replacement is typically necessary. If a solenoid or valve body is the cause, repair may be less extensive.
How is gear ratio measured for P0732?
The TCM compares input shaft speed to output shaft speed. The calculated ratio should match the expected gear ratio. When the ratio deviates beyond a threshold, the code is set.