Volvo All Engines (2017 Emissions) Fault Code: P033531 PID: EMS Crankshaft Position Sensor “A”
Volvo All Engines (2017 Emissions) Fault Code: P033531 PID: EMS Crankshaft Position Sensor “A”
The Crank Speed Sensor is an inductive sensor that will generate a variable voltage signal when the sensor’s magnetic field is excited. When the engine is running the flywheel’s teeth rotate past the sensor’s tip and voltage pulses are generated. The Engine Control Module (ECM) monitors the frequency of the signal generated by the Crank Speed Sensor and calculates the engine RPM.
Conditions for diagnostic trouble code (DTC):
1) No signal
Observable symptoms
1) Long start time
2) Uneven operation
Probable cause
1) Connector
2) Wiring harness
3) Incorrectly installed sensor (incorrect distance to tooth wheel)
4) Crankshaft position (CKP) sensor
5) Engine Control Module
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