Common Symptoms
- Check Engine Light illuminated
- Transmission slipping or flaring during 1st gear shifts
- Harsh or delayed engagement into first gear
- Vehicle may start in higher gear or skip first gear
- Reduced acceleration from a stop
- Transmission may go into limp mode
Most Likely Root Causes
- Low or contaminated transmission fluid
- Worn or damaged first gear clutch pack
- Faulty transmission solenoid or pressure control solenoid
- Internal transmission mechanical wear or damage
- Transmission control module software issue
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Component Location
The transmission gear train and clutch assemblies are internal to the automatic transmission housing, typically located under the vehicle between the engine and driveshaft.
Manufacturer Notes
Some manufacturers have updated transmission control module calibrations to address false gear ratio codes caused by aggressive driving or towing conditions.
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