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Project #3731

TRW EMS2.2 MPC5554 E5 21878923P01 20977019P04 21040476P01 21906984P01

VOLVO Truck Diesel ADBLUE OFF ✓ Completed Feb 5, 2026

Vehicle & ECU

ECUTRW EMS2.2 MPC5554 E5
Brand groupVOLVO
Vehicle typeTruck
FuelDiesel
File size2.00 MB 2,097,152 bytes
Completed
Automated processing≈ 20 min
Status✓ Completed & delivered
Original filerenault_truck_trw_ems2.2_mpc5554_bench_intflash_20241125144231.bin
Stock fileStock read, not yet in the ORI archive

Software identification 4

Software number21878923P01
Identifier 220977019P04
Identifier 321040476P01
Identifier 421906984P01

Operations performed 1

  1. ADBLUE OFF automated · solution rev 5 · ~20 min

    Disables the AdBlue (SCR) system in software; no AdBlue refills are needed afterwards.

Other solutions for this ECU 12

Every operation below can be ordered for the same TRW EMS2.2 MPC5554 E5 file (diesel). Prices are per file in EUR; automatic solutions are delivered within minutes, engineer-assisted ones are prepared by our tuning team.

STAGE1 A safe performance tune that needs no mechanical changes and does not harm the vehicle. engineer-assisted, on request · ~30 min 100 EUR
ADBLUE OFF Disables the AdBlue (SCR) system in software; no AdBlue refills are needed afterwards. done in this project ✓
DPF OFF Deletes the diesel particulate filter (DPF) system in software; if the vehicle has AdBlue, it must be deleted first. engineer-assisted, on request · ~15 min 100 EUR
EGR OFF Disables the exhaust gas recirculation (EGR) system. engineer-assisted, on request · ~15 min 50 EUR
LAMBDA OFF Disables the oxygen (lambda) sensors. engineer-assisted, on request · ~10 min 50 EUR
NOX OFF Disables the NOx sensor. engineer-assisted, on request · ~20 min 50 EUR
VMAX OFF Removes the speed limiter (Vmax) or sets it to the desired value. engineer-assisted, on request · ~20 min 50 EUR
TVA OFF Disables the diesel throttle valve. engineer-assisted, on request · ~20 min 100 EUR
FLAPS OFF Disables the swirl flaps in the intake manifold. engineer-assisted, on request · ~20 min 100 EUR
IMMO OFF Disables the immobilizer system so the vehicle can start and run. engineer-assisted, on request · ~60 min 200 EUR
REVLIMIT Adjusts the engine rev limiter (hard cut) point. engineer-assisted, on request · ~15 min 50 EUR
DTC OFF Permanently disables the fault codes (DTC) you select; you need to provide the P codes to turn off. engineer-assisted, on request · ~20 min 50 EUR
REV ORI Restores your modified software file to its original factory state. engineer-assisted, on request 75 EUR
Have a TRW EMS2.2 MPC5554 E5 file? Sign in to the ECUHARD platform, upload it and pick the operations — automatic solutions are ready in minutes, 24/7, invoice issued automatically.
Sign in & upload your file →

About this project

EMS is an engine management ECU family used by Renault/Nissan, Volvo trucks and others. This unit is fitted to VOLVO Truck vehicles. Project #3731 was completed automatically by the ECUHARD file service for a VOLVO Truck vehicle running software 21878923P01 20977019P04 21040476P01 21906984P01.

Frequently asked questions

What was done to this TRW EMS2.2 MPC5554 E5 file?

Operations performed: ADBLUE OFF. The modified file was checksum-corrected and delivered ready to flash.

What is the software version for this TRW EMS2.2 MPC5554 E5 file?

This project is for TRW EMS2.2 MPC5554 E5 with software numbers: 21878923P01, 20977019P04, 21040476P01, 21906984P01. The same operations apply to other vehicles running the same software.

Can I get the same tuning for my VOLVO?

Yes. Sign in, upload your original ECU file (TRW EMS2.2 MPC5554 E5 or any supported ECU), choose the operations you need and our automated system prepares the file, usually within minutes, 24/7.

I read my ECU with a different tool — will the tuning fit my file?

Yes. Every operation is applied to the file you upload — your own read from your own car — so the tool and the read mode do not matter: the modifications are located by content, not by a fixed file layout. If your file was modified before, our REV ORI (revert to original) module repairs every changed area back to the stock values first — no matter which tool or method read it (KTAG, KESS, Flex, Autotuner, CMD, OBD, bench or boot) (75 EUR). A compatibility problem is therefore impossible.

I have an OBD read — can you tune it, or do I need a bench/boot read?

An OBD read is fine as long as it contains the software area (maps). Upload it; the platform detects the ECU and software number and shows which operations are available for your file. If the read is partial and an operation is not possible on it, you will see that before paying.

I read boot mode with KTAG / bench with Flex / bench or OBD with Autotuner — which read do I upload?

Any of them. Upload the file exactly as your tool saved it (TRW EMS2.2 MPC5554 E5 reads are supported in OBD, bench and boot form). The system works on your own read, so nothing has to be converted or matched to a different device.

Do you need the full backup (EEPROM, other sectors)?

No. Only the software-related part of the ECU is used: the maps area — the internal flash and/or the external flash, depending on where the software lives in that ECU. EEPROM and other memory sectors are not needed and are never modified. Keep your full backup for yourself as a safety copy.

How can I be sure the result will be compatible with my ECU?

Because the file returned to you is your own read with only the selected areas changed and the checksum corrected, it flashes back with the same tool and method you used to read it. The software number stays the same; nothing else in the file is touched.

What other operations are available for TRW EMS2.2 MPC5554 E5?

STAGE1 (100 EUR, engineer-assisted, on request); DPF OFF (100 EUR, engineer-assisted, on request); EGR OFF (50 EUR, engineer-assisted, on request); LAMBDA OFF (50 EUR, engineer-assisted, on request); NOX OFF (50 EUR, engineer-assisted, on request); VMAX OFF (50 EUR, engineer-assisted, on request); TVA OFF (100 EUR, engineer-assisted, on request); FLAPS OFF (100 EUR, engineer-assisted, on request); IMMO OFF (200 EUR, engineer-assisted, on request); REVLIMIT (50 EUR, engineer-assisted, on request); DTC OFF (50 EUR, engineer-assisted, on request); REV ORI (75 EUR, engineer-assisted, on request). Prices are per file.

I have a TRW EMS2.2 MPC5554 E5 file — how can I get it done?

Sign in to the ECUHARD platform (solutions.ecuhard.com), upload your ECU file, select the operations you need and confirm. Automatic solutions are delivered within minutes, 24/7; engineer-assisted operations are prepared by our tuning team. Each file is checksum-corrected and an invoice is issued automatically.

Do I need to send my original file?

Yes — upload the stock read of your ECU. If you do not have it, our original file archive may have a matching file by software number.