Error Code 12214
- The check engine light is on. The coolant temperature signal is below 90°C or above 160°C, which is incorrect or out of range.
- Test coolant temperature sensor. Make resistance test at pin 13 of LH control unit and ground. Resistance should be approximately 2280-2720 ohms at 68°F (20°C) and 295-365 ohms at 176°F (80°C).