Blog - Auto Machine Diagnosis EPC Download Installation Service

Posted on June 15, 2026May 27, 2026 by autoepccatalog

How to Solve Liebherr Machine P1160 NH3 Sensor Heater Performance Error

Liebherr Machine P1160 NH3 Sensor Heater Performance Error (6)

This instruction show you guide on how to solve Liebherr machine trouble code P1160 NH3 sensor heater performance error.

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Compatible Machine ECU:

ECU2

D966 A7-04, D966 A7-05

D9512 A7-04

Troubleshooting:

Check the sensor

Information for engines with serial number UP TO 2018 xx xxxx (12/31/2018):
In the event of failures of NH3 sensors (ID no. 10144038) on the exhaust treatment system of Stage IV engines, the NH3 control unit (ID no. 10144039) must also be replaced ONCE to improve the service life of the NH3 sensor.
The sensor will come with an extended heat shrink tubing for improved protection of the trim resistance
This spare parts information applies for engines with a serial number up to 2018 xx xxxx (12/31/2018) : all engines with a year of manufacture starting from 2019 are already equipped with the latest version.
• In the event of a sensor failure, the sensor control unit must be replaced ONCE with a new sensor control unit.
• No active conversion is carried out. Replacement only in the event of failure.
• A repair kit with the ID 13489562 is available, it includes the sensor and sensor control unit.

Component Location

EATS All versions:

D956-D966 A7-04 (SCR only)

D956-D966 A7-05 StageV (SCR Filter)

D9512 A7 04-05-StageV

Primary (A700)

Secondary (A760)

Posted on June 7, 2026June 3, 2026 by autoepccatalog

How to Solve JCB JS140 C101F-12 Fuel Level Sensor Short Circuit to Battery

Here is the instruction show you guide on how to solve JCB JS140 machine trouble codes C101F-12 fuel level sensor short circuit to battery (For JS140 Side Mounted FLS).

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Possible Cause:

1 Faulty fuel sensor.

2 Faulty Wire harness.

3 Faulty Display ECU.

Diagnosis:

1 Check the resistance output of fuel sensor between machine grounds & Pin no “B” of fuel sensor. Fuel sensor output shall be between 12Ω – 100Ω Refer below photograph for fuel sensor connection.

2 Check the voltage on wire no. 8028 after disconnecting DECU & Fuel sensor. 24 V shall not be measured on wire no. 8028.If 24V measured on wire no. 8028 then wire got short circuited to machine supply voltage.

Follow the electrical circuit 336/F3635 for fuel sensor connection.

Corrective Action:

1 Replace the fuel sensor.

2 Replace the Faulty wire harness.

3 Replace the faulty display ECU.

Posted on June 2, 2026May 26, 2026 by autoepccatalog

How to Solve Bobcat machine P18B0 DEF Line Heater SCB Error

This instruction show you guide on how to solve Bobcat machine trouble code P18B0 DEF line heater SCB error.

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Code:U004340-03

Reason:

1 Electric problem (DEF line heater connector)

2 Electric problem (Heater relay, Wiring harness related DEF line heater)

3 Electric problem (DCU connector, DCU)

Effect:Inducement Group2

Component Location

3) Condition for Running Diagnostic

Power-stage is not actuated

4) Condition for Setting the Fault Code

The power-stage hardware reports a “SCB” error

➢ State of Diagnosis load feedback for Circuit 3(Pressure line) is TRUE or

➢ State of Diagnosis load feedback for Circuit 4(Backflow line) is TRUE or

➢ State of Diagnosis load feedback for Circuit 5(Suction line) is TRUE

5) Condition for Clearing the Fault Code

When no error is detected

➢ State of Diagnosis load feedback for Circuit 3(Pressure line) is FALSE or

➢ State of Diagnosis load feedback for Circuit 4(Backflow line) is FALSE or

➢ State of Diagnosis load feedback for Circuit 5(Suction line) is FALSE

6) Check List

Posted on May 28, 2026May 26, 2026 by autoepccatalog

Liebherr ECU2 ECU2-HD ECU3 P1120 SCR System Out of Service Error Solution

Liebherr ECU2 ECU2-HD ECU3 P1120 SCR System Out of Service (8)

This instruction show you guide on how to solve Liebherr machine engine D966 D9512 ECU2 ECU2-HD ECU3 trouble code P1120 scr system (air pump/air supply valve) out of service.

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Reason:

The failure code is displayed during check phase :

Air supply is always ON (No air supply stop in Sensor Check phase)
Air supply is always OFF (No air supply in PreCheck 1/2/3 phase)

Troubleshooting

Consequence:

As the P1120-00 failure is emission relevant, the inducement process starting with P1187-00 “Inducement system – Warning (SCR failure) will begin, leading to a power reduction if the failure is not solved.
If a second occurrence of the failure comes back, this leads to a repeated offense issue which means that the engine will stay blocked in the latest stage of inducement. As a consequence, Service Technician is needed to remove the power reduction.

Component Location:

EATS All versions

D956-D966 A7-04 (SCR only)

D956-D966 A7-05 StageV (SCR Filter)

D9512 A7 04-05-StageV

Primary (A700)

Secondary (A760)

Posted on May 23, 2026May 14, 2026 by autoepccatalog

MANITOU MT6034 Engine Oil Filter Replacement Guide

Here is the instruction show you guide on how to replace engine oil filter for MANITOU MT6034.

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Procedures:

Change the engine oil and filter using the following procedure:

1 With the engine warm, remove the crankcase drain plug located on the left side of the engine oil pan.

IMPORTANT: DO NOT discharge oil onto ground.

Catch and dispose of per local waste disposal regulations.

2 The engine oil filter should be changed at every oil change interval. Using a suitable filter wrench, remove and discard the filter.

IMPORTANT: Filtration of oils is critical to proper lubrication. Always change filter with every oil

change. Use only genuine OEM engine replacement filters.

3 Apply a thin coat of clean engine oil to the sealing gasket of the new oil filter.

4 Wipe the filter sealing surface on the engine with a clean cloth.

5 Turn new oil filter on by hand until filter contacts the sealing surface then turn the filter an additional 3/4 turn.

6 Clean and re-install the drain plug.

7 Re-fill the crankcase with new oil. Follow specifications in the Lubrication chapter for type and viscosity of new oil.

NOTE: The oil capacity listed is approximate.

Always verify oil level with the engine oil dipstick.

8 After new oil has been added, run the engine at idle

speed until the oil pressure lamp is off. Check for leaks at the filter and drain plug.

9 Verfy the oil level is at the “Full” mark on the engine oil dipstick.

IMPORTANT: Low engine oil level and over full engine oil levels can cause engine damage.

Posted on May 19, 2026 by autoepccatalog

How to Solve AGCO Machine SPN 110 Coolant Temperature High Alarm

This instruction show you guide on how to solve AGCO machine trouble code SPN 110 coolant temperature high alarm.The measured coolant temperature exceeds the overheating alarm limit.

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Failure Mode Indicator

FMI 00 – Above normal operational range – most severe.

Failure Mode

Fault code is stored and warning lamp is activated. The engine will stop after 30 seconds. CAN message indicates, that shutdown is pending.

Possible Cause

The fan belt is slipping or the belt is broken
Cooling system is not completely filled
Water pump is defective
Cooling system is clogged
Thermostat is defective or removed (double acting thermostat)
Thermostat is upside down.
Radiator filler cap is not pressure tight
Engine is overloaded
Coolant temperature sensor wiring is defective
Coolant temperature sensor is defective
Control unit is defective

Diagnosis and Solution

Find cause for the overheating indication:

Check the fan belt and the belt tension.
Check the coolant level.
Check condition of the radiator.
Check the mechanical condition of the engine.
Check the coolant temperature sensor wiring, connectors and contact surfaces of the connector pins (possible oxidation).

Coolant Temperature Sensor

Check the coolant temperature sensor operation.

Coolant Temperature Sensor

Check the ECU operation with another EEM3 controller. If the system is functional and the fault is not active with the replacement ECU, then the original ECU is defective.

ECU Replacement

Posted on May 14, 2026 by autoepccatalog

JCB JCB 3CX 4CX Backhoe Loader Load Sensing Flow and Pressure Testing

This instruction show you guide on how to perform load sensing flow and pressure test for JCB JCB 3CX 4CX Backhoe loader.

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With no services operating, there should be no pressure in the load sense line, this is because hydraulic oil flows through the load sense circuit back to the hydraulic tank. If a shuttle valve is ‘stuck’, or a hose kinked, then a pressure could be induced in the load sense lines, this will have an effect on the hydraulic system. To check load sense pressure:

1 Warm the hydraulic oil to working temperature, i.e. 50°C (122°F):

a Set the engine speed to 2200 rev/min.

b Operate the loader shovel dump service to blow off the auxiliary relief valve.

2 Lower the backhoe bucket and loader shovel to rest on the ground; stop the engine; operate the control levers to vent residual hydraulic pressure.

3 Connect a 0 – 400 bar (0 – 6000 lbf/in2) pressure gauge to pressure test connector A located on the load sense line from the loader valve.

4 Start the engine and run at 2200 rev/min.

5 Do not move the steering wheel and make sure that all control levers remain in ‘neutral’ position.

6 Check the pressure gauge reading, which should be as specified in Technical Data.

7 If the pressure is higher than specified, first move the steering wheel and then any of the service levers. If this does not reduce the pressure, physically check the load sense lines for trapping or kinking. As a last resort, the service valves may have to be removed and checked for sticking shuttle valves. However, this should not be done until all other checks have been completed.

8 Machines with the load sense pressure relief valve adjust the load sense pressure relief valve E. Machines without a load sense pressure relief valve adjust the regulator valve.

Posted on May 11, 2026April 29, 2026 by autoepccatalog

How to Solve Serdia 4.0 Software of Dataset is Not Known

Deutz Serdia 4.0 “The software of the dataset, which you want to flash, is not known in this SerDia 4.0 version.It is therefore not possible to flash this dataset. Make sure that SerDia4.0 is up to date.”

Some customers get above “software of the dataset is not known” error when they perform Deutz engine ECU flash.Here autoepccatalog.com share the solution to solve it.

Software of the dataset error is due to old version Serdia 4.0 software you used v16.00.00

The solution is you need to update your Serdia 4.0 v16.00.00 to v18.02.00,but currently v16.00.00 can not be update to v18.02.00.If you do update that will cause your Serdia 4.0 can not work anymore.

So solution is you need to buy new version Deutz Serdia 4.0 v18.02.00