Powertrain
generic / SAE
P07FF
Cold Start Transmission Performance
During the cold-start phase the transmission does not behave to specification — typically very slow shifts, missed shifts or harsh engagement at low ATF temperature. Common causes are degraded ATF (lost cold-flow viscosity), a stuck thermostat or aged solenoid drivers.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number7 / FF
Possible causes
- Degraded ATF without cold-flow reserve high
- Stuck transmission fluid thermostat medium
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 150–800 €
- Estimated time: 0.5–3 h
- Component: transmission fluid
- Component: transmission fluid thermostat
- MIL / check engine light
Sources
References
sae:J2012