Volvo All Engines (2017 Emissions) Fault Code: P255612 PID: EMS Engine Coolant Level Sensor/Switch
Volvo All Engines (2017 Emissions) Fault Code: P255612 PID: EMS Engine Coolant Level Sensor/Switch
Engine Coolant Level (ECL) Sensor
Voltage from the engine control module (ECM) is applied to the engine coolant level (ECL) switch when the ignition switch is in the ON position. When the reservoir runs low, the float will be lowered on the coolant level sensor. The signal to the ECM will indicate low coolant.
If the engine control module (ECM) detects that the coolant level switch has experienced a power loss or that the level can not be detected, the ECM will set a diagnostic trouble code (DTC) and derate the engine to avoid engine damage.
Conditions for diagnostic trouble code (DTC)
Short circuit to battery voltage on Placeholder
Diagnostic operating conditions
Ignition key in ON position
Observable symptoms
Coolant level cannot be detected
Probable cause
1) Connector
2) Wiring harness
3) ECM – Engine Control Module
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