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Home >> Geo >> 1992 >> Prizm Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Code Charts (Except GSI) >> Code 22, Coolant Temperature Sensor, Open Or Shorted Circuit >> Diagnostic Aids

Diagnostic Aids

After engine is started, engine coolant temperature should rise to approximately 203°F (95°C) and stabilize when thermostat opens. Code 22 will set if Brown or White wire is open. If code is intermittent, see TESTS W/O CODES article in this section.

Fig 1: Code 22 Schematic (Except GSi), Coolant Temperature Sensor Open Or Shorted Circuit
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Fig 2: Code 22 Flow Chart (Except GSi), Coolant Temperature Sensor Open Or Shorted Circuit
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