Car symptom
Transmission slipping
Slipping, flaring or delayed shifts usually come from fluid condition, solenoids or internal wear.
Most likely causes
- Low or burnt fluid
- Shift solenoid / valve body
- Worn clutch packs
- Wiring or sensor fault
Checks to run
- Check fluid level and colour
- Scan transmission codes
- Road test monitoring slip
Tools you may need
OBD-II scanner
Transmission fluid
Confirm before replacing. These are hypotheses to check — never buy parts on a guess. If the fault involves brakes, airbags or fuel under pressure, use a professional.
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FAQ
It depends on the cause. Some causes are cheap and quick; others (like a head gasket or seized caliper) need attention soon. Work through the checks in order and confirm before replacing parts.
Start with the free checks listed here. If they involve high voltage, fuel under pressure, airbags or brakes, let a professional handle it.
The interactive diagnostic asks targeted questions to narrow it down, and every cause must be confirmed with a measurement — never guess.