Volvo All Engines (2013 Emissions) Fault Code: P01991F PID: EMS Engine Oil Temperature Sensor Circuit Intermittent/Erratic
Volvo All Engines (2013 Emissions) Fault Code: P01991F PID: EMS Engine Oil Temperature Sensor Circuit Intermittent/Erratic
Circuit description
The Engine Oil Temperature/Level Sensor contains two resistors: One for engine oil temperature and one for engine oil level.
Conditions for diagnostic trouble code (DTC)
Abnormally high rate of change of the oil temperature sensor signal
Intermittent fault
Observable symptoms
High fuel consumption
Probable cause
1) Engine oil level (EOL) and temperature sensor
2) Engine wiring harness
3) Engine Control Module
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