Cause of scania engine errors

17.12.2020 Comments

To the maintenance teams that keep showing up to get the job done, thank you.

cause of scania engine errors

Click to read more about what Fiix is doing to support maintainers during this time. Last Updated: June 26, Jes Ellacott 6 min read. This post was originally written as a guest blog by Nicole Pontius from Camcode. Equipment failure happens. The impact of it can run the gamut from easily fixed with minimal losses to catastrophic, depending on factors like repair costs, total downtime, health and safety implications, and impact on production and delivery of services.

There are several common reasons equipment can break down, and understanding why your equipment may be failing is your first line of defence against the serious consequences of unplanned downtime.

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There are a whole bunch of people who might be in and around equipment on a daily basis who could have a significant impact on its overall operating condition. Equipment operators are one such group. Sometimes this situation arises as a result of short staffing or unexpected absences.

5 causes of equipment failure (and what you can do to prevent it)

Other times emergencies come up that require quick remediation with available staff who might not necessarily have the level of expertise that your most experienced operators have. One solution to these problems is to ensure that you have enough trained operators to allow for some flexibility and a contingency plan for staff shortage emergencies.

Most importantly, never allow an operator to use equipment they are not qualified to run. The Occupational Safety and Health Administration OSHA sets regulations for operator training requirements for certain types of equipment and for general occupational safety.

Read more. In other cases, companies simply lack efficient planning methods for ensuring that ongoing maintenance is performed. Tracking equipment and machinery with asset tags can help to keep maintenance schedules on track and equipment operating at maximum operational efficiency.

Preventive maintenance is one ongoing function that should never be allowed to fall by the wayside. Taking care of your equipment with regular tune-ups will extend the usable life of your equipment, ultimately giving you more for every dollar. Additionally, preventive maintenance can identify small problems with inexpensive solutions before they become major, costly breakdowns.

When you use effective inventory control strategies to ensure that you have the right spare parts in supply for the most common maintenance tasks and malfunctions, downtime for routine maintenance and repairs is minimal. In fact, the U.

Scania R450 engine start problem

Department of Energy estimates that preventive maintenance results in:. Not enough can be problematic for the reasons we outlined above, but too much is also a major cause for concern. But here are the Coles Notes: Every time you get into a machine to maintain it, you open up that piece of equipment to a whole set of risks, and over time those risks can compound and lead to failure.

Think of it in terms of surgery— a triple bypass is a life-saving operation. So how do you find the right balance of preventive maintenance? The cure here is simple in concept but a bit more complex in execution: condition-based maintenance. It takes a lot of things into account, from manufacturer information equipment history to real-time data like vibration analysis.

Continuous monitoring relies on sensor data to establish a baseline for what good equipment condition looks like in order to detect subtle changes, which can be used to predict breakdowns and failures. This allows more time for contingency planning and scheduling downtime to minimize production interruptions.

If this is where you want your maintenance operations to go, it might be time to consider moving to a digital maintenance solution. Which means that band-aid solution becomes a semi-permanent solution until it stops working and becomes and full-fledged failure. A really good example of this is Boeing.See also: Scania trucks service repair manuals PDF.

Erase the trouble codes from the memory, then turn off the ignition with the ignition key, and then turn it on again. Does the trouble code remain active? In this case, replace the control unit. Erase the trouble codes from the memory, then turn off the ignition with the ignition key and turn it on again. The crankshaft sensor registers the rotation of the engine, but the camshaft sensor does not generate pulses.

The engine management system uses a backup strategy to continue tracking the phases of the engine. The bypass valve of the turbocharger is controlled by a solenoid valve Vwhich receives signals from the engine management system.

An open or short in the electrical circuit of the solenoid valve. A short to ground in the electrical circuit of the solenoid valve. A short to power in the electrical circuit of the solenoid valve. The atmospheric pressure sensor indicates a value higher than the value of the charge air pressure sensor. The charge air pressure sensor indicates a value higher than the value of the pressure sensor in the exhaust system.

Outside temperature sensor or temperature sensor before air intake to the impeller of the turbocharger. The outside temperature sensor indicates a too high value or the temperature sensor before intake of air to the impeller of the turbocharger shows a too low value. During this test, when the vehicle is moving, a comparison is made between the temperature reading from the outside temperature sensor and the temperature sensor before air intake to the impeller of the turbocharger.

The check can be performed faster if the car is moving at a higher speed. The EGR system turns off when the measured outside temperature is too low. In accordance with current legal requirements, engine power is reduced on vehicles that are equipped with NOx exhaust control. The temperature shown by the outside temperature sensor is too low, or the temperature shown by the charge air temperature sensor is too high.

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.The valve no longer closes properly? An excessively large or small valve guide clearance can also have fatal consequences. You will find an overview of possible valve failures and their causes in this article. Cause: The valve clearance has been set too tight or the maintenance intervals have been exceeded.

Consequence: The value no longer closes properly. Combustion gases flow past the valve seat and heat up the valve head. This causes the valve head to overheat and burns through in the seat area.

Cause: The spring was not inserted correctly during installation. The tilted spring has caused a lateral bending moment M on the valve stem. Consequence: The resultant alternating bending stress ultimately caused a fracture of the valve stem face and destroyed the valve guide. Cause: After installation of the tappets, the minimum required waiting time before starting the engine at least 30 mins was not observed.

As a result, the excess oil in the working area of the tappets did not have enough time to escape. Consequence: If the engine is started prematurely, the valves strike against the piston and can bend or break. Consequence: The valve fails to close properly, overheats and burns through in the seat area.

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Fatigue fractures in the area of the fillet may also occur as a result of the unilateral stress of the valve head. Cause: The valve guide clearance is too large due to excessive wear of the valve guides or due to excessive reaming during repair.

Consequence: The influx of hot gases can cause significant carbon deposits in the area of the stem guide. The valve becomes stiff and fails to close properly, with overheating of the seat occurring as a result burns or shot channels. Cause: The guide diameter has been dimensioned too small during replacement of the valve guides. Consequence: Inadequate lubrication, stiffness and seizures of the valve stem in the guide. Consequential damage such as overheating of the valve head or seat area can occur.

Cause: Old, worn valve cotters were used during replacement of the valves. Consequence: If worn valve cotters are reused, the clamping system can become loose during operation. This results in frictional corrosion on the stem and weakening of the valve in this area.

This can cause vibration fatigue failure. Cause: Forces are applied eccentrically from the rocker arm to the skirt end face of the valve. Consequence: Unilateral wear occurs on the stem and the skirt end. The lateral force on the valve stem caused by the eccentric application of force causes fatigue fractures in the area of the clamping system. Cause: A bent valve stem will cause unilateral support of the valve seat on the seating ring.

Consequence: The unilateral stress causes alternating bending stresses and fatigue fractures in the fillet radius at the transition to the stem. Cause: Significant increased pressure and temperature loads occur in the combustion chamber as a result of combustion defaults. Consequence: The valve head cannot withstand the high thermo-mechanical loads and bends inwards.

This results in so-called tulip formation and causes fractures in the area of the valve head. What do I need to watch out for when replacing and repairing valves?

Scania EMS Fault Codes List: 11-642

When replacing valves, it is very important to check the valve guides too. Consequential damage to valves can often be caused by old Motorservice Group uses cookies saved to your device in order to optimize and continuously improve its websites, as well as for statistical purposes.By kscarbelFebruary 25, in Other Truck Makes.

InScania entered North America with an impressive truck line-up. The effort failed more due to an arguably flawed market launch strategy than the product itself. Scania at that time had not engineered lightened models for the weight sensitive U. At its peak in the U. Features like air ventilation filters, unheard of back then on U. The newer 3-series appeared in the time frame. There was some criticism about the lack of a liter engine for long-distance hauling, but actually hp was the mainstream rating at that time so the Scania hp engine was competitive.

The North American Scania customers quickly developed a strong loyalty for these trucks and praised them for their fuel economy. On June 18,Scania U. The last customer-ordered Scania was delivered to a U. If Mack was to be acquired by a Swedish truckmaker, it should have been Scania. Mack Trucks had a very successful decades-long relationship with Scania going back to April 10th, Scania continues to provide after-sales support in the U.

There's am owner operator in southern MN who bought a tandem conventional with the V8 new. I haven't seen him in a few years, but last I heard he had 1, miles on the Scania with an engine rebuild atThere are a bunch of them still on the road here in nj My buddy use to have a scania triaxle dump truck it was very economical. Might be good trucks, not much dealer support, imagine taking one of those to your local truck shop for parts and repairs. And if you think a Volvo has a sharp depreciation curve, try trading a Scania back to any new truck dealer.

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Here we go again, trying to compare apples to pears, a product from the past to current product. When i worked for Atlas Van Lines as a company driver,we got one of these as a "loaner" from the local Freightliner dealer when my tractor was having the leaking windshield "fixed" for about the 15th time. They had just became a Scania dealer,and were really pushing these trucks,i drove one like the one in the picture for about a week,what a shitwagon!

I remenber back in themid 60s when there was some B models here with the sanie engine in it. END Scania has become one of the best heavy truckmakers in the world, and arguably superior to Volvo in every way.The light will turn on for five seconds, and then turn off for half a second. Then the indicator will turn on again for 2.

The most accurate options for checking a BMW car are using a computer or a diagnostic scanner. But to implement this method, the user needs to prepare in advance special equipment for testing or a laptop with software installed on it.

cause of scania engine errors

The testing process begins. Depending on the vehicle model, the firmware version of the control unit and the laptop program, or the scanner version, the procedure can take from several minutes to an hour. Upon completion of the verification process, a list of errors found in the operation of the BMW car will appear on the screen of the laptop or tester.

The user needs to decrypt these codes and, in accordance with the information received, repair the units and assemblies. After the vehicle is restored to serviceability, the fault combinations are deleted from the control unit memory. On the control panel, the daily mileage reset key installed on the odometer is pressed and held. In the ignition switch, the key is turned to position I. On the dashboard screen, an inscription will light up indicating the beginning of the test - Test The daily mileage reset button in the car is released.

The control combination will start issuing diagnostic cycles, alternately indicating the internal auto code, VIN code, software version, dashboard number, etc. Damage or interruption of the side airbag circuit. Short-term power failure, there may be a malfunction in the electrical or digital CAN bus. General error code for electrics, it is necessary to look for short circuits.

Broken cable supplying the programmable thermostat. The device will not be able to activate at the right time, which will lead to insufficient cooling or overheating of the power unit. The cause of the problem must be sought in the wiring or poor-quality contact. Perhaps the thermostat itself is faulty, then the device will have to be changed. Also, the problem may be damage to one of the pipes of the cooling system.

cause of scania engine errors

Literally, this error translates as "power management - actively reducing consumption. Possible short circuit on the contacts of one of the connectors. This code on BMW E32 and other versions indicates a critical discharge of the battery, the control unit reports the need to recharge the device. Internal error, exact fault not indicated. It is recommended that you start troubleshooting with the safety devices and relays installed in the mounting block. Perhaps the problem is the failure of one of them or a short circuit in the socket.

You should also diagnose the microprocessor control module of the power unit. Malfunctioning electric fan. It is necessary to dismantle and disassemble the device, the problem often is damage to the cable on the block connecting the device to the mains.

Terminal 50 output failure. Check wiring and battery. With such a problem, you need to test the battery and replace it:.Diagnostic trouble codes or fault codes are obd2 codes that are stored by the on-board computer diagnostic system. These are stored in response to a problem found in the car by the system. These DTC's identify a particular problem area and are intended to provide the technician with a guide as to where a fault might be occurring within the vehicle.

They're the cause for indicator light malfunction on the dashboard. Codes should be used in conjunction with the vehicle's service manual to discover which systems, circuits or components should be tested to fully diagnose the fault with a car code reader or professional OBD2 software.

Parts or components should not be replaced with reference to only a malfunctioning indicator lamp check engine fault light. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing. For example, if a DTC reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem.

The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself. DTCs may also be triggered by faults earlier down the line.

Valve damage and causes

For example, a dirty MAF sensor might be causing the car to overcompensate in its fuel-trim adjustments. As a result, oxygen sensors are likely to report fuel mixture problems. You can also access the database by downloading the printable offline version of OBD2 codes ideal for auto mechanics. TIP: This helpful resource site will reveal problem, cause, solution for every obd fault code which is picked up via computer software for car diagnostics. In general, codes that begin with P0 are Generic codes, whereas codes that begin with P1 are manufacturer-specific.

Additional code groups are however available to allow for expansion of these code lists. The full breakdown of the code groups is shown below:. TIP: To quickly find an error code, use your browsers Search function. Home Contact Support Knowledgebase Downloads. Remember me.

Support login is emailed upon contacting support. Lost password. P Cylinder 2 Misfire Detected More details P Cylinder 3 Misfire Detected More details P Cylinder 4 Misfire Detected More details This article was helpful. This article was not helpful.This code means the PCM powertrain control module, also known as ECM or engine control has detected a problem in the injector or its wiring, or in injector circuit for cylinder 3. This code is a generic trouble code, meaning it applies to all vehicles equipped with OBD-II, or vehicles made in to present.

Additionally, this code can be seen in engine misfire, rich and lean conditions.

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Once the code is set, the vehicle will activate its failsafe mode, keeping the engine safe from further damage. The problem must be fixed before the vehicle switches back to normal operation from failsafe mode. Error Code P is quite unique, as symptoms can be felt even before the Check Engine light is activated in the dashboard, as the vehicle may display rich or lean condition alongside with engine misfire.

Other common symptoms include:. As with most error codes, qualified mechanics check this error code by hooking it up to advanced scanner and check for the codes. Codes present will have their associated freeze frame data taken, which will tell the mechanic the conditions of the vehicle when the code was set, such as engine load, vehicle speed and operating temperature. Then, the codes will be cleared and the vehicle will be taken for test drive to see if the problem comes back and registers to the scanner.

If the code indeed comes back, the mechanic will proceed on conducting a visual inspection on the injector circuit and the fuel injector itself. Then, the mechanic will test the injector for voltage to confirm proper operation. Using the scan tool, he will then monitor injector operation, along with a noid light installed to the injector wiring to test for cylinder 3 injector and check for proper voltage.

Repairs for this error code are pretty straightforward, which will be derived from a thorough diagnosis. Possible fixes include:. The problem for this code ranges from just the Check Engine light in the dashboard to various poor-running conditions. The usual suspect for this problem is the injector itself, but it always pays to conduct a thorough diagnosis before replacing it. Remember me. Table of Contents. Subscribe to our mailing list.