Vehicle Won't Move When in Gear with Warm Engine
The vehicle is in gear but refuses to move, especially when the engine is warm. This typically indicates a transmission or drivetrain problem, though brake or steering issues are less likely to cause a complete lack of movement. The warm engine condition suggests a fluid-related failure (e.g., low or degraded transmission fluid) or internal transmission damage.
Diagnosis Details
Possible Causes
Low or contaminated automatic transmission fluid (ATF) causing loss of hydraulic pressure.
Failed torque converter or internal transmission component (e.g., clutch pack, valve body).
Seized brake caliper or parking brake mechanism preventing wheel rotation.
Related OBD-II Codes
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What You Should Do
Check transmission fluid level and condition (smell, color).
If low, top off and test.
If fluid is burnt or contaminated, transmission may need service.
Inspect for seized brakes by attempting to roll the vehicle in neutral on level ground.
Do not force the vehicle; seek professional diagnosis immediately.
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
