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Volvo All Engines (2017 Emissions) Fault Code: U016700 PID: EMS Lost Communication With Vehicle Immobilizer Control Module

Volvo All Engines (2017 Emissions) Fault Code: U016700 PID: EMS Lost Communication With Vehicle Immobilizer Control Module

Circuit description
The immobilizer function is a part of a system that prevents the engine from starting if the correct ignition key is not used. After ignition ON, a security code is broadcast from the ECM control unit to the immobilizer control unit or the Instrument cluster (US market). Engine start is permitted if a correct response message is received within a certain number of tries and within a certain time from the immobilizer control unit.

Conditions for diagnostic trouble code (DTC)
Communication fault between Instrument cluster (IC) and Engine control module (ECM)

Observable symptoms
Engine cannot be started

Probable cause
1) Instrument cluster
2) Data link