Fault Code 17


Description:  Engine stays cold too long
Power loss light:  Off
Limp-in mode:  None

Possible Causes

Thermostat stuck open - Replace the thermostat.  This is usually accompanied by poor heater performance.  The thermostat is located inside the water box behind the housing where the raditaor hose connects.  Be sure to get a new gasket.

Coolant temperature sensor failure - The sensor should measure 9,120 ohms to 10,880 ohms at 77^F.  Will not be accompanied by a fault code 22, so it may be that the sensor reading is skewed, even though it is not out of range.  On 2.2L and 2.5L engines, this sensor is located on the right-hand side of the water box.

Diagnostic Method

Trigger Parameters

- 8 minute timer has expired, 12 minutes after engine startup
- Vehicle speed is above 28 mph
- Coolant temperature is below 174^F
- Fault code 22 is not stored

Results If Component Fails

Fault code 17 is stored.
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This page is maintained by Russell W. Knize and was last updated 08/28/98. Comments? Questions? Send email.

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