Scania EMS Fault Codes 1316-4170

EMS 42240

2110164, 2110165, 2110166, 2110162, 2110116

SCR – Voltage supply

The voltage of one of the sensors having a common power is higher than the set value.

The fuel level sensor, which is currently the only sensor in this sensor group, has a short to battery.

As a result of a fault, the injection of the reagent is turned off.

  • Check the electrical components, electrical connectors and wiring.
  • Sensor resistance should be in the range between 397 ohms and 92 ohms.

EMS 46593

2098557, 2098556, 2110163, 2110160

Contact with coordinator

The engine control unit does not receive from the coordinator unit messages about the current position of the accelerator pedal, the braking system, the inclusion of the starter and air conditioning, the operation of the torque limiting system and other systems.

  • Lost communication between engine control unit and coordinator.
  • If the DTC was generated only once, this may be due to the interruption of the supply of voltage to the coordinator while maintaining the supply of voltage to the engine control unit. If this DTC is generated frequently, it may be due to wiring problems or loose connectors.
  • If fault code 16384 was generated at the same time, there may be a fault in the engine control unit. If this fault code was generated and fault code 16384 is not, it is possible that there is a fault in the wiring.

The inability to start the engine while there is a malfunction.

If this malfunction occurs when the engine is running, pressing the accelerator pedal is ignored. The car can continue driving at minimum speed.

  • General Troubleshooting: Clear the DTC memory and check the engine start. Turn off and turn on the onboard power supply with the ignition key.
  • If the DTC reappears, check the wiring and clean the electrical connectors. If this does not help, make sure that the control units simultaneously receive the on / off voltage of the ignition voltage (U15).
  • Do not forget to read and erase the trouble codes from the memory of the coordinator unit.

EMS 1379

2098547, 2098546, 2098545, 2096902, 2096901, 9000000, 2089202, 2089201, 2089200

The battery voltage was above the allowable value.

Generator malfunction may result in too high charging current.

The engine control unit turns off the EGR system and the engine power decreases.

Check the generator and measure the system voltage.

EMS 4152

SCR – Reagent Temperature

The temperature of the reagent inside the main unit was above the permissible value.

  • The cause of the malfunction may be:
  • Water heating valve stuck open.
  • Internal malfunction in the control unit.

As a result of a fault, the SCR system shuts down and the reagent injection shuts down.

When the SCR system is turned off, fault codes 4108, 4106, and 4107 relating to data exchange with the SCR system can also be generated. Perform a primary troubleshooting using this fault code.

When the SCR system is disabled, the communication between the SCR control unit and the engine control unit can be interrupted. To ensure correct handling of the DTC, control units must be able to communicate with each other. Try to reestablish the connection, for which you should turn off the ignition, wait 90 seconds and turn on the ignition again.

High temperatures in the SCR system may cause decomposition of the reagent.

The fault affects the emission of nitrogen oxides (NOx) by the car, and a warning lamp lights up in the instrument cluster, warning of a high level of pollutants. On vehicles with NOx control, a text message is also displayed.

  • Cars with NOx control
  • An active DTC cannot be deleted from the control unit. When the malfunction is resolved so that the malfunction code becomes inactive, the control unit must ensure that the malfunction has been eliminated.

Check whether the water valve is open in the open position.

If the fault lies in the main unit, the main unit should be replaced.

  • Turn off the ignition with the key, wait at least 90 seconds and then turn it on again with the key.
  • If the fault is resolved, the fault code becomes inactive. Clear the fault code.
  • To turn off the alarm, turn off and turn on the ignition with the ignition key three times in a row at 10-second intervals.

EMS 43526

SCR – tank temperature sensor

The voltage in the circuit was outside the limits.

Short circuit in the tank temperature sensor electrical circuit

If the signal voltage exceeds the permissible range, the control unit uses a preprogrammed value at 20 ° C.

  • For troubleshooting the SCR system, refer to the Scania Multi 03-25 “Exhaust System, SCR (Selective Catalytic Reduction)” section.
  • Check the electrical components, electrical connectors and wiring.
  • To verify that the sensor is working, remove it and measure its resistance.
  • At a temperature of 15-25 ° C, the resistance should be in the range of 1 500-2 100 Ohm.
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EMS 49511

SCR – Main Unit

Internal malfunction in the main unit.

  • Disconnect the heating element connector to the diaphragm pump. If the fault code becomes inactive, this indicates a malfunction of the heating element. In this case, replace the diaphragm pump.
  • Try to remove the fault code, and then turn off and turn on the ignition. If the DTC appears again, replace the main unit.

EMS 41490

When the SCR system is turned off, DTCs 42256, 43345, and 43361 related to data transmission for the SCR system can be generated. Perform a primary troubleshooting using this fault code.

When the SCR system is off, may interrupt the data transmission between the SCR control unit and engine control unit. To ensure correct handling of the DTC, control units must be able to communicate with each other. To restore communication, turn off the ignition and wait 90 seconds before turning it on again.

EMS 4111

Solenoid driver warns of malfunction.

This fault may be caused by a short circuit in the wiring, a short circuit in the solenoid valve, or a short circuit inside the control unit.

The engine control unit is programmed in such a way that if any faults occur in individual cylinders that are not critical, these cylinders will continue to work. In the case of some types of short circuits, the work of several cylinders is disrupted at once. Fault codes will be recorded for all cylinders operating with violations.

If fault codes were generated for two or more cylinders, the maximum engine torque will be reduced by 30%.

  • Check the electrical components, electrical connectors and wiring.
  • Check the resistance of the coil of the solenoid valve. Electrical resistance should be equal to 0.4-0.6 ohms. Also check the resistance between the solenoid valve connector and the motor. If the resistance is less than 100 ohms, there may be a short circuit.
  • Clear the trouble code memory.
  • If there is a malfunction, replace the injector pump first and then the control unit.

EMS 4118

Incorrect or unreliable data.

Internal malfunction in the control unit.

Cars with NOx control

An active DTC cannot be deleted from the control unit. When the malfunction is resolved so that the malfunction code becomes inactive, the control unit must ensure that the malfunction has been eliminated.

Ensure that the diaphragm pump is not clogged or damaged. If there is damage, replace the diaphragm pump.

Turn off the ignition with the key, wait at least 90 seconds and then turn it on again with the key. If the DTC is still active, replace the SCR control unit; This means that the main unit should be replaced.

If the fault is resolved, the fault code becomes inactive. Clear the fault code.

Using the ignition key, turn off and turn on the power three times in a row at intervals of 10 seconds to deactivate the test lamp.

EMS 4148

Turn off the ignition with the key, wait at least 90 seconds and then turn it on again with the key. If the DTC is still active, replace the main unit.

EMS 4147

Information code for NOx control – cannot be deleted

This DTC does not indicate any malfunction. It is intended only to inform the authorities, and should not be used for troubleshooting.

  • A malfunction code indicates that there were faults in the vehicle that affect the release of nitrogen oxides (NOx). This information is required to meet the requirements of legislation regarding the control of NOx emissions.
  • This DTC indicates that the control unit has generated DTCs for the SCR system.

DTC cannot be cleared.

The fault code is automatically deleted if the fault did not occur within 400 days.

No action required.

EMS 17415

While there is a fault, the car cannot start moving.

Clear the DTC memory and perform a vehicle road test within 10 minutes. The fault code remains active? If the code is written to memory again, replace the control unit.

EMS 41075

SCR – Level in the reagent tank

The amount of reagent in the tank below the permissible value.

Or too little reagent in the tank or a level sensor in the tank is faulty.

  • For troubleshooting the SCR system, refer to the Scania Multi 03-25 “Exhaust System, SCR (Selective Catalytic Reduction)” section.
  • Refill reagent. If there is enough reagent in the tank, check the level sensor.

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К примеру, ищем код неисправности под номером 136 – программа сразу же выдает нам все ошибки, в которых присутствует данное число. Далее, выбирая нужную, видим, что данный код означает. В нашем случае — то, что давление в топливной рампе выше запрошенного. Здесь также можно ознакомиться с причинами, по которым это может произойти, имеются примечания и соответственно меры, которые следует предпринять.

Тоже самое возможно найти по любым другим ошибкам. Так что пользуйтесь.

EMS 41218

Battery voltage when the engine is at idle was below the allowable value.

It is possible that this fault is caused by a defective generator or battery circuit. Another reason may be too high current consumption.

Starting the engine is difficult and certain high current-consuming functions are deactivated . Examples of disconnecting equipment: seat heating and heated exterior mirrors.

Check the battery and alternator.

Check the connectors and wiring.

Check the power and consumption of the system.

EMS 42251

SCR air pressure

The difference in air pressure before and after constriction during dosing is less than expected

The injection device or air hose is plugged.

The SCR system does not inject the additive, resulting in increased exhaust emissions.

EMS 43586

SCR reagent pressure

The reagent pressure at start-up drops by more than 0.5 bar.

The vent valve is stuck open or there are leaks in the reagent hose.

The SCR system is turned off until the next cycle of motion begins (ignition is switched off with the key) and any reagent is injected, which leads to an increase in the level of discharge. When the system is turned off, fault codes 100C, 100A and 100B (CAN time exceeded) can be generated. Be sure to troubleshoot this problem before taking action on codes 100C, 100A, and 100B.

Note: Diagnostics regarding this DTC cannot be performed while the SCR system is off. Therefore, this DTC cannot become passive or be generated again (if deleted) before the next cycle of motion. In order to be able to read the fault codes, turn off the ignition with the key for 90 seconds and then turn it on again.

Check whether the vent valve is open in the open position. Check reagent hose for leaks.

EMS 40977

Constantly turned on switch “kickdown” (accelerator pedal is not in the extreme position).

If this DTC is stored in memory, the activation of the kickdown is ignored.

  • If the DTC remains active, replace the coordinator. Erase the trouble codes from the memory and test drive the car. During the trip, depress the accelerator pedal as far as it will go.
  • If the DTC remains active, replace the engine control unit.

EMS 41078

SCR – Reagent Dispenser

An open or a short to ground in the electrical circuit of the reagent dispenser.

When the SCR system is off, may interrupt the data transmission between the SCR control unit and engine control unit. To ensure correct handling of the DTC, control units must be able to communicate with each other. To restore communication, turn off the ignition and wait 90 seconds before turning it on again.

  • Check the electrical components, electrical connectors and wiring.
  • Resistance reagent dispenser should be 13,7-15,3 ohms at 20 ° C.

EMS 17410

SCR – NOx sensor in front of the catalytic converter

The NOx sensor has detected a short circuit in the electrical circuit and sends a message to the SCR control unit.

Short circuit in the electrical circuit of the NOx sensor in front of the catalytic converter or too low voltage / current in this electrical circuit

This test is performed by the NOx sensor in front of the catalytic converter. The result is sent to the engine control unit via CAN. The SCR system works even when this DTC is active.

  • Check for signal from the NOx sensor.
  • Check the NOx sensor, connectors and wiring.

EMS 16384

If this DTC is stored in the memory, the control unit ignores pressing the accelerator pedal. The set engine speed of 750 rpm allows the vehicle to continue driving at minimum speed. At the same time, engine speed, coolant temperature and oil pressure are not displayed on the instrument panel.

In case of this fault, the engine cannot be started.

If the control unit starts working normally again, then in order for this code not to be considered as active, it is necessary to perform a check in the engine stop mode. When checking in the engine killing mode , the control unit performs a functional check of the components after the ignition is turned off.

Erase the trouble codes from the memory, then turn off the ignition with the ignition key and turn it on again. If this DTC is generated again, replace the control unit.

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EMS 49670

Too late closing of the solenoid valve pump nozzle. The injection advance angle is later than required.

The cause of the malfunction may be a jamming of the solenoid valve or an excessively high resistance of the wiring.

As a result, there may be some uneven operation of the engine.

  • Check the wiring and clean the connector.
  • Clear the trouble code memory.
  • Start the engine. If this DTC is generated again, replace the pump injector.

EMS 42242

Coolant level sensor.

The voltage in the circuit has fallen below acceptable levels.

  • Short circuit in the coolant level sensor circuit.
  • Fault in the electrical circuit of the oil temperature sensor or electrical circuit of the oil pressure sensor.

The oil pressure sensor, oil temperature sensor and coolant level sensor have a common power supply. In the event of a fault in one of the sensors, it may affect the electrical circuits of the other sensors.

The coolant level cannot be determined until the malfunction has been rectified.

Check the oil pressure sensor, oil temperature sensor and coolant level sensor with connectors and electrical wiring.

EMS 1318

Voltage supply for SCR control unit

The SCR control unit shuts down too late.

Internal fault in the main unit or faulty wiring of the SCR control unit.

SCR system does not turn off.

The current is still consumed, which can lead to a low battery.

  • Check electrical wiring.
  • If the fault lies in the main unit, it should be replaced.

EMS 43345

SCR – tank level sensor

Short circuit in the electrical circuit of the level sensor in the reagent tank.

  • For troubleshooting the SCR system, refer to the Scania Multi 03-25 “Exhaust System, SCR (Selective Catalytic Reduction)” section.
  • Check the electrical components, electrical connectors and wiring.
  • Sensor resistance should be 92–397 ohms.

EMS 41057

Battery voltage was below acceptable value. It was 9 volts or less for 0.2 seconds.

The fault may occur during a cold start, if the battery is in poor condition.

Under reduced voltage can be observed difficult start the engine.

  • Check the battery and alternator.
  • Check the connectors and wiring.

EMS 49922

Too slow increase of current in the winding of the solenoid valve. The rise time of the current is determined by the control unit, depending on the voltage of the battery and the temperature of the coolant.

The fault may be due to too high resistance, the reason for which may be:

  • Open circuit between control unit and solenoid valve.
  • Damaged wiring.
  • Open circuit inside the control unit.

The engine control unit is programmed in such a way that if any faults occur in individual cylinders that are not critical, these cylinders will continue to work. If fault codes were generated for two or more cylinders, the maximum engine torque will be reduced by 30%.

EMS 43592

The engine control unit does not receive from the coordinator unit any messages about the braking system, cruise control, clutch and other systems.

  • Lost communication between engine control unit and coordinator.
  • If the fault code was generated only once, this may be due to the replacement of the coordinator.
  • If fault code 16384 is simultaneously generated, replace the control unit.
  • If this DTC is generated, and DTC 16384 is not, there may be a problem with the wiring or loose connections.
  • If a fault code is generated frequently, it is possible that the wiring is faulty or the connectors of the brake system or cruise control switches are loose.

EMS 49668

No signal to close the pump solenoid valve.

  • Short circuit or open circuit injectors.
  • Solenoid valve malfunction pump-injector or mechanical failure of the pump-injector.
  • It is also possible for air to enter the fuel line.
  • Check the wiring and clean the connector.
  • Make sure the fuel line to the injector pump is working properly.
  • Remove air from the fuel system.
  • Clear the DTC memory and start the engine.
  • If the DTC remains active, replace the pump injector.

EMS 26112

Open or short circuit on the “+” battery circuit of the auxiliary starter relay.

A short circuit of +24 V can cause the starter to inadvertently turn on.

Check the electrical components, electrical connectors and wiring.

EMS 11179

Air Conditioning Control

Short circuit in the air conditioning solenoid valve circuit.

The air conditioning compressor is not controlled.

EMS 20486

Short circuit or open circuit injectors.

Solenoid valve malfunction pump-injector or mechanical failure of the pump-injector.

It is also possible for air to enter the fuel line.

EMS 43591

Clear the trouble code memory. Turn on and off the onboard power supply with the ignition key. The fault code remains active? If the code is written to memory again, replace the control unit.

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