DTC P1281: Engine Is Cold Too Long: Testing

Ensure coolant level is at proper level. Replace or top off coolant as necessary. If coolant level is okay, start engine and allow it to idle. Using scan tool, set engine speed to 1500 RPM. Using scan tool, monitor ENG COOLANT TPM DEG until engine coolant temperature reaches 180°F (82°C). Temperature value should increase smoothly from start-up to normal operating temperature. If temperature change is not smooth or temperature does not reach at least 176°F (80°C), repair cooling system as necessary. If temperature change is smooth and temperature reaches at least 176°F (80°C), no problem is indicated at this time. Test is complete.