Volvo All Engines (2017 Emissions) Fault Code: P034031 PID: EMS Camshaft Position Sensor “A” Bank 1 or Single Sensor
Volvo All Engines (2017 Emissions) Fault Code: P034031 PID: EMS Camshaft Position Sensor “A” Bank 1 or Single Sensor
The camshaft position (CMP) sensor is an inductive device. As the camshaft turns, the tip of the CMP sensor senses the teeth of the tone wheel fastened to the camshaft vibration damper. The CMP sensor sends a series of voltage pulses to the Engine Control Module (ECM). The frequency of the pulses is translated into engine speed (RPM) and position by the ECM. The ECM uses this information along with the information from Crankshaft Position (CKP) sensor to synchronize fuel injection.
Conditions for diagnostic trouble code (DTC):
1) No camshaft position (CMP) sensor signal
Observable symptoms
1) Difficult to start at next start despite that no diagnostic trouble code (DTC) is set when the engine is running
2) Loss of power
Probable cause
1) Connector
2) Wiring harness
3) Camshaft Position (CMP) Sensor
4) Tooth wheel
5) ECM – Engine Control Module
Detailed information
1) The sensor has reversed polarity
2) Incorrectly installed sensor (incorrect distance to tooth wheel)
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