Volvo

Volvo All Engines (2013 Emissions) Fault Code: P111D00 PID: EMS Engine Coolant Level Moderately Low

Circuit description
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)
Coolant level switch closed

Probable cause
1) Connector
2) Wiring harness
3) Engine Coolant Level (ECL) Sensor
4) Low coolant level
5) Engine control module (ECM)

Volvo All Engines (2013 Emissions) Fault Code: P111E00 PID: EMS Engine Coolant Temperature Moderately High

The Engine Coolant Temperature Sensor is a thermistor. The resistance of the Engine Coolant Temperature Sensor changes inversely to the temperature of the engine coolant. When the coolant is cold, the sensor resistance is high. As the temperature of the coolant increases, the sensor resistance decreases.
The Engine Control Module (ECM) monitors the voltage drop across the Engine Coolant Temperature Sensor.
The coolant temperature signal is used to calculate fuel injection and to evaluate operating conditions of the engine coolant temperature. Examples of conditions that may cause high coolant temperature are: thermostat failure, fan failure, heavy load, high ambient temperatures and radiator blockage.
The sensor’s signal is monitored by the Engine Control Module (ECM).
The engine control module (ECM) will set a diagnostic trouble code (DTC) and derate the engine to avoid engine damage if the sensor signal is not within predetermined limits, or the signal is not rational.

Conditions for diagnostic trouble code (DTC):
1) Temperature too high

Observable symptoms
1) Engine de-rated

Probable cause
1) Engine cooling fan
2) Fan belt
3) Thermostat
4) Low coolant level
5) Clogged radiator
6) Clogged cooling system
7) Coolant pump drive belt
8) Coolant pump belt tensioner
9) Slipping impeller
10) Poor flow-through in the cooling system
11) Pressure cap, expansion tank
12) Engine coolant temperature sensor
13) Engine control module (ECM)

Volvo All Engines (2013 Emissions) Fault Code: P112100 PID: EMS EGR Temperature Too High

Circuit description
This function is used to check if the Exhaust Gas Recirculation (EGR) temperature sensor is working and check the status on the EGR cooler. If the sensor should show a value above limit due to extreme driving or malfunction in the cooler, the Engine Control Module (ECM) will derate the engine to avoid damage.

Conditions for diagnostic trouble code (DTC)
Temperature above normal, EGR System

Observable symptoms
Engine de-rated

Probable cause
1) Temperature sensor, EGR
2) Insufficient cooling effect, EGR Cooler

Volvo All Engines (2013 Emissions) Fault Code: P112198 PID: EMS EGR Temperature Too High

This function is used to check if the Exhaust Gas Recirculation (EGR) temperature sensor is working and check the status on the EGR cooler. If the sensor should show a value above limit due to extreme driving or malfunction in the cooler, the Engine Control Module (ECM) will derate the engine to avoid damage.

Conditions for diagnostic trouble code (DTC):
1) The sensor value is not within an expected range

Observable symptoms
1) None

Probable cause
1) Sensor
2) Connector
3) Wiring harness

Volvo All Engines (2013 Emissions) Fault Code: P112200 PID: EMS EGR Temperature Moderately High

This function is used to check if the Exhaust Gas Recirculation (EGR) temperature sensor is working and check the status on the EGR cooler. If the sensor should show a value above limit due to extreme driving or malfunction in the cooler, the Engine Control Module (ECM) will derate the engine to avoid damage.

Conditions for diagnostic trouble code (DTC):
1) EGR temperature after cooler is above range

Observable symptoms
1) Engine de-rated

Probable cause
1) Extreme driving conditions, EGR Cooler

Volvo All Engines (2013 Emissions) Fault Code: P112500 PID: EMS Engine Oil Temperature Moderately High

The Engine Oil Level/Temperature Sensor contains two thermistors, one for engine oil temperature and one for engine oil level. The resistance of the engine oil temperature portion of the sensor changes inversely to the temperature of the engine oil. When the engine oil is cold, the sensor resistance is high. As the temperature of the engine oil increases, the sensor resistance decreases.
The Engine Control Module (ECM) monitors the voltage drop across the sensor and uses this signal to warn the driver and derate the engine to avoid engine damage if the signal is not within programmed limits.

Conditions for diagnostic trouble code (DTC):
1) Temperature too high

Observable symptoms
1) Info lamp lights up if the temperature is moderately above range
2) Red lamp lights up if the temperature is critically above range
3) A buzzer sounds if the temperature is critically above range
4) Engine de-rated

Probable cause
1) Extreme driving conditions
2) Clogged oil cooler
3) Cooling System
4) Thermostat
5) Engine oil level (EOL) and temperature sensor
6) Engine cooling fan

Volvo All Engines (2013 Emissions) Fault Code: P112800 PID: EMS Piston Cooling Oil Pressure Moderately Low

The Engine Piston Cooling Oil Pressure Sensor is used to detect engine piston lubrication and cooling system failures. The sensor consists of a pressure sensitive diaphragm and amplifier. Engine piston cooling oil pressure causes the sensors diaphragm to deflect and produce an electrical signal proportional to the pressure. The diaphragm deflection signal is amplified in the sensor.
The sensor’s signal is monitored by the Engine Control Module (ECM).
The engine control module (ECM) will set a diagnostic trouble code (DTC) and derate the engine to avoid engine damage if the sensor signal is not within predetermined limits, or the signal is not rational.

Conditions for diagnostic trouble code (DTC):
1) Low piston cooling pressure

Observable symptoms
1) Power loss

Probable cause
1) Engine Piston Cooling Oil Pressure Sensor
2) Engine oil pressure
3) Piston Cooling Valve
4) Oil filter housing

Volvo All Engines (2013 Emissions) Fault Code: P112900 PID: EMS Transmission Fluid Temperature Moderately High

The J1587 and J1939 serial data lines are used as the standard communication link for on-board vehicle instrumentation, off-board service diagnostics and fleet management.
The transmission oil temperature sensor sends a signal to the instrument cluster module which relays a signal to the engine control module (ECM) via the data link. The signal is used to demand fan activation. If the transmission oil temperature gets too high, a yellow check lamp or red stop lamp will illuminate. The engine will also derate.

Observable symptoms
1) Engine de-rated

Probable cause
1) Low oil level, Transmission
2) Oil temperature sensor
3) Oil cooler
4) Transmission overloaded

Volvo All Engines (2013 Emissions) Fault Code: P112A00 PID: EMS Turbocharger/Suprecharger Actuator “A” Temperature Moderately High

Circuit description
The (VGT) Variable Geometry Turbocharger Actuator is a self-contained component with motors, sensors and a control unit.

The (VGT) Variable Geometry Turbocharger uses a movable nozzle to adjust the intake manifold pressure for various operating conditions. Nozzle movement is controlled by an actuator mounted on the tubocharger. When the Engine Control Module (ECM) Relay is energized, a fuse supplies battery voltage to the (VGT) Variable Geometry Turbocharger and the unit is grounded by means of the engine block.

Conditions for diagnostic trouble code (DTC)
High actuator temperature
The temperature of the VGT actuator exceeds 125??C (257??F)

Observable symptoms
Low Power

Probable cause
1) High engine coolant temperature (ECT), Cooling System
2) Actuator
3) Poor coolant flow through the actuator
4) Actuator coolant lines are not connected correctly
5) Extreme driving conditions
6) Variable Geometry Turbo