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Volvo All Engines (2017 Emissions) Fault Code: P050600 PID: EMS Idle Control System – RPM Lower Than Expected

Volvo All Engines (2017 Emissions) Fault Code: P050600 PID: EMS Idle Control System – RPM Lower Than Expected

The Engine Control Module (ECM) monitors the crankshaft angular acceleration using the flywheel sensor. The ECM monitors the camshaft position sensor to determine the engine’s position. The ECM calculates the average value of crankshaft angular acceleration for all six cylinders and compares the value to each individual cylinder’s angular acceleration. If a cylinder’s acceleration value is outside a specified range the ECM interprets this as a misfiring cylinder. The crankshaft average angular acceleration value is used by the ECM to determine cylinder balancing and idle speed.

Conditions for diagnostic trouble code (DTC):
1) Engine Speed at idle, Below normal

Observable symptoms
1) Idle Below normal

Probable cause
1) Power Take Off (PTO) installed without updating parameters and/or software
2) Parameter code, unit injector
3) Fuel
4) Injector
5) Low compression

Volvo All Engines (2017 Emissions) Fault Code: P050200 PID: EMS Vehicle Speed Sensor “A” Circuit Low
Volvo All Engines (2017 Emissions) Fault Code: P050013 PID: EMS Wheel-Based Vehicle Speed
Volvo All Engines (2017 Emissions) Fault Code: P04DD00 PID: EMS Cold Start EGR “A” Flow Insufficient Detected
Volvo All Engines (2017 Emissions) Fault Code: P04DB00 PID: EMS Crankcase Ventilation System Disconnected
Volvo All Engines (2017 Emissions) Fault Code: P04DA00 PID: EMS Closed Loop EGR Control At Limit – Flow Too High
Volvo All Engines (2017 Emissions) Fault Code: P04D900 PID: EMS Closed Loop EGR Control At Limit – Flow Too Low