Toyota Corolla
P0128
The P0128 code in a 2019-2024 Toyota Corolla E210 indicates that the engine coolant temperature is not reaching the optimal operating temperature within a specified period, often suggesting issues with the thermostat or coolant temperature sensor.
9 SolutionsP-CodePowertrain
P
Error Code Type
Powertrain
Components
3 affected
Cooling Systemthermostatengine cooling system
Symptoms
10 common
- •Check engine light illuminated
- •Engine runs colder than normal
- •Poor fuel economy
- +7 more
Most Affected Generations
3 generations
E170
4
E140
3
E210
2
Top Affected Components
3 components
Cooling System
7
thermostat
1
engine cooling system
1
Severity Levels
2 levels
medium
8
high
1
Quick Facts
9
Total Solutions
3
Affected Components
10
Common Symptoms
3
Generations
All Solutions
Showing 9 of 9 solutions for error code P0128 across all generations.