Transmission Slipping or Clutch Failure
The engine revs but the car does not move, indicating a loss of power transmission from the engine to the wheels. This is a classic sign of transmission slipping or clutch failure, which can occur intermittently.
Diagnosis Details
Possible Causes
Low or contaminated transmission fluid causing hydraulic pressure loss in automatic transmissions.
Worn clutch disc, pressure plate, or release bearing in manual transmissions.
Failed torque converter or internal transmission damage (e.g., worn bands, seals, or solenoids).
Faulty transmission control module or sensor causing erratic shifting.
Related OBD-II Codes
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What You Should Do
Check transmission fluid level and condition (smell for burnt odor, look for dark color or debris).
If low, top off and test.
For manual transmissions, inspect clutch operation and adjust or replace as needed.
If fluid is fine, have a professional scan for transmission trouble codes and perform a pressure test or internal inspection.
Related Repairs
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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.
