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Symptom: P0198-ENGINE OIL TEMPERATURE SENSOR VOLTAGE TOO HIGH When Monitored and Set Condition: P0198-ENGINE OIL TEMPERATURE SENSOR VOLTAGE TOO HIGH When Monitored: Ignition on. Set Condition: When the PCM recognizes the engine oil temperature sensor signal above a specific voltage. POSSIBLE CAUSES ENGINE OIL TEMP VOLTAGE ABOVE 4.9 VOLTS ENGINE OIL TEMP SENSOR (G61) ENGINE OIL TEMP SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE (G61) ENGINE OIL TEMP SENSOR SIGNAL CIRCUIT OPEN (K900) SENSOR GROUND CIRCUIT OPEN PCM TEST ACTION APPLICABILITY 1 Ignition on, engine not running. t, read DTCs and record the related Freeze Frame data. With the DRBIII t, read Engine Oil Temp Sensor voltage. Is the voltage above 4.9 volts? All Yes → Go To 2 No → Refer to the INTERMITTENT CONDITION Symptom (Diagnos- tic Procedure). 2 Turn the ignition off. t, read the Engine Oil Temp Sensor voltage. Is the voltage below 1.0 volt? All Yes → Replace the Engine Oil Temp Sensor. Perform POWERTRAIN VERIFICATION TEST VER - 5. No → Go To 3 NOTE: Remove the jumper wire before continuing. 83 DRIVEABILITY - GAS |