Engine Management

Scan Tool 33 (MIL 17):

Trouble Code Number
- Scan tool 33
- General Scan Tool (None listed)
- MIL 17

Fault Message
- Engine is Cold Too Long

Background
- When the engine is started, the engine coolant temperature rises. The PCM checks that the engine coolant rises to the specified value within a sufficient period after the engine is started.

Range of Check
- Vehicle speed: More than 28 mph
- 20 minutes after starting engine

Set Condition
- Engine coolant temperature does not rise to 71°C (160°F)

Probable Cause
- Thermostat fully open
- Engine coolant temperature sensor failed
- Engine coolant temperature sensor connector improperly connected
- PCM failed