Toyota Corolla Cross: M20a-fks Spark Plug

 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) (P012800,P012807)

DESCRIPTION The ECM uses the engine coolant temperature sensor, installed to the water outlet, to monitor the operation of the thermostat. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note P012800 Coolant Thermostat (Coolant Temperature Below Thermo

 Ambient Temperature Sensor Circuit Short to Ground (P007011)

DESCRIPTION The thermistor assembly is installed in front of the cooler condenser assembly to detect the ambient temperature, which is used to control the air conditioning system. This sensor is connected to the air conditioning amplifier assembly and detects fluctuations in the ambient temperature.