DTC P0128: Thermostat [12/2015 - 08/2016]: Description
WARNING: This page is about a different car, the 2016 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
This DTC relates to the thermostat.
This DTC is stored when the engine coolant temperature does not reach 75°C (167°F) despite sufficient engine warm-up time having elapsed.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0128 | Conditions (a), (b) and (c) are met for 5 seconds (2 trip detection logic): (a) Cold start (b) Engine warmed up (c) Engine coolant temperature less than 75°C (167°F) |
|