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Project #21550

EDC17C74 04L906026BT 1542 04L907309R

VW - AUDI - SEAT - SKODA - PORSCHE Car Diesel DPF OFF + EGR OFF + LAMBDA OFF + DECAT + NOX OFF + VMAX OFF + FLAPS OFF + DTC OFF ✓ Completed Sep 23, 2026

Vehicle & ECU

ECUEDC17C74
Brand groupVW - AUDI - SEAT - SKODA - PORSCHE
Vehicle typeCar
FuelDiesel
File size4.00 MB 4,194,304 bytes
Completed
Automated processing≈ 45 min
Status✓ Completed & delivered
Original fileVirtual
Stock fileStock file in ORI archive (#33776) →

ECM Titanium

Driver · Vehicle · ECUAXXX_400 · AUDI A4 · EDC17C74

Software identification 3

Software number04L906026BT
Version / upgrade1542
Identifier 204L907309R

Operations performed 8

  1. DPF OFF automated · solution rev 15 · ~5 min

    Deletes the diesel particulate filter (DPF) system in software; if the vehicle has AdBlue, it must be deleted first.

  2. EGR OFF automated · solution rev 16 · ~5 min

    Disables the exhaust gas recirculation (EGR) system.

  3. LAMBDA OFF automated · solution rev 17 · ~5 min

    Disables the oxygen (lambda) sensors.

  4. DECAT automated · solution rev 2 · ~5 min

    Disables catalytic converter efficiency monitoring and the P0420/P0430 fault codes.

  5. NOX OFF automated · solution rev 20 · ~5 min

    Disables the NOx sensor.

  6. VMAX OFF automated · solution rev 8 · ~5 min

    Removes the speed limiter (Vmax) or sets it to the desired value.

  7. FLAPS OFF automated · solution rev 18 · ~5 min

    Disables the swirl flaps in the intake manifold.

  8. DTC OFF automated · solution rev 1 · ~10 min

    Permanently disables the fault codes (DTC) you select; you need to provide the P codes to turn off.

    • P0030HO2S Heater Control Circuit Bank 1 Sensor 1
    • P0031HO2S Heater Control Circuit Low Bank 1 Sensor 1
    • P0032HO2S Heater Control Circuit High Bank 1 Sensor 1
    • P0036HO2S Heater Control Circuit Bank 1 Sensor 2
    • P0037HO2S Heater Control Circuit Low Bank 1 Sensor 2
    • P0038HO2S Heater Control Circuit High Bank 1 Sensor 2
    • P00D5HO2S Sensor Correlation Bank 1 Sensor 1/Bank 1 Sensor 2
    • P0400Exhaust Gas Recirculation Flow
    • P0401Exhaust Gas Recirculation Flow Insufficient Detected
    • P0402Exhaust Gas Recirculation Flow Excessive Detected
    • P0403Exhaust Gas Recirculation Control Circuit
    • P0404Exhaust Gas Recirculation Control Circuit Range/Performance
    • P0405Exhaust Gas Recirculation Sensor "A" Circuit Low
    • P0406Exhaust Gas Recirculation Sensor "A" Circuit High
    • P040BEGR Temperature Sensor "A" Circuit Range/Performance
    • P040CEGR Temperature Sensor "A" Circuit Low
    • P040DEGR Temperature Sensor "A" Circuit High
    • P041BEGR Temperature Sensor "B" Circuit Range/Performance
    • P045AEGR "B" Control Circuit
    • P045BEGR "B" Control Circuit Range/Performance
    • P045CEGR "B" Control Circuit Low
    • P045DEGR "B" Control Circuit High
    • P045EEGR "B" Control Stuck Open
    • P045FEGR "B" Control Stuck Closed
    • P046CEGR Sensor "A" Circuit Range/Performance
    • P0470Exhaust Pressure Sensor
    • P0471Exhaust Pressure Sensor Range/Performance
    • P0472Exhaust Pressure Sensor Low
    • P0474Exhaust Pressure Sensor Intermittent
    • P0475Exhaust Pressure Control Valve
    • P0476Exhaust Pressure Control Valve Range/Performance
    • P0477Exhaust Pressure Control Valve Low
    • P0478Exhaust Pressure Control Valve High
    • P047FExhaust Pressure Control Valve "A" Stuck Open
    • P0486Exhaust Gas Recirculation Sensor "B" Circuit
    • P048AExhaust Pressure Control Valve "A" Stuck Closed
    • P048BExhaust Pressure Control Valve "A" Position Sensor/Switch Circuit
    • P048CExhaust Pressure Control Valve "A" Position Sensor/Switch Circuit Range/Performance
    • P048EExhaust Pressure Control Valve "A" Position Sensor/Switch Circuit High
    • P049AEGR "B" Flow
    • P049CEGR "B" Flow Excessive Detected
    • P0544Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 1
    • P0545Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 1
    • P1485EGRV Circuit Malfunction
    • P1489EGR Flow Insufficient Detected
    • P2000NOx Trap Efficiency Below Threshold Bank 1
    • P2002Particulate Trap Efficiency Below Threshold Bank 1
    • P2003Particulate Trap Efficiency Below Threshold Bank 2
    • P2031Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 2
    • P2032Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 2
    • P2080Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 1
    • P2084Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2
    • P23A0O2 Sensor Exhaust Sample Error Bank 1 Sensor 2
    • P23A1O2 Sensor Exhaust Sample Error Bank 2 Sensor 2
    • P23A3Exhaust Heat Exchanger Exhaust Bypass Valve "B" Control Circuit Low
    • P23A4Exhaust Heat Exchanger Exhaust Bypass Valve "B" Control Circuit High
    • P23A6Exhaust Heat Exchanger Exhaust Bypass Valve "B" Stuck Open
    • P23A7Exhaust Heat Exchanger Exhaust Bypass Valve "B" Stuck Closed
    • P241FEGR Cooler "B" Efficiency Below Threshold
    • P2425Exhaust Gas Recirculation Cooling Valve Control Circuit/Open
    • P2426Exhaust Gas Recirculation Cooling Valve Control Circuit Low
    • P2427Exhaust Gas Recirculation Cooling Valve Control Circuit High
    • P242AExhaust Gas Temperature Sensor Circuit Bank 1 Sensor 3
    • P242BExhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3
    • P242CExhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3
    • P2457EGR Cooler "A" Efficiency Below Threshold
    • P246EExhaust Gas Temperature Sensor Circuit Bank 1 Sensor 4
    • P246FExhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 4
    • P2470Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 4
    • P247BExhaust Gas Temperature Out of Range Bank 1 Sensor 4
    • P2A01HO2S Circuit Closed Loop (CL) Performance Bank 1 Senso
    • P2BD2Exhaust Aftertreatment System "A" Leak
    • P2BD3Exhaust Aftertreatment System "B" Leak
    • P2BFAExhaust Flow Control Valve "B" Control Circuit High
    • P2BFBExhaust Flow Control Valve "B" Control Performance

Other solutions for this ECU 10

Every operation below can be ordered for the same EDC17C74 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. automatic, 41 ready solutions for this file size · ~15 min 10 EUR
STAGE2 A performance tune that requires hardware changes such as exhaust, filter or DPF removal. automatic, 8 ready solutions for this file size · ~60 min 40 EUR
STAGE3 A performance tune built from data logs after vehicle-specific hardware upgrades. automatic, 1 ready solution for this file size · ~180 min 200 EUR
ADBLUE OFF Disables the AdBlue (SCR) system in software; no AdBlue refills are needed afterwards. automatic, 35 ready solutions for this file size · ~10 min 5 EUR
DPF OFF Deletes the diesel particulate filter (DPF) system in software; if the vehicle has AdBlue, it must be deleted first. done in this project ✓
EGR OFF Disables the exhaust gas recirculation (EGR) system. done in this project ✓
LAMBDA OFF Disables the oxygen (lambda) sensors. done in this project ✓
DECAT Disables catalytic converter efficiency monitoring and the P0420/P0430 fault codes. done in this project ✓
NOX OFF Disables the NOx sensor. done in this project ✓
VMAX OFF Removes the speed limiter (Vmax) or sets it to the desired value. done in this project ✓
TVA OFF Disables the diesel throttle valve. automatic, 15 ready solutions for this file size · ~5 min 5 EUR
FLAPS OFF Disables the swirl flaps in the intake manifold. done in this project ✓
STARTSTOP OFF Permanently disables the Start/Stop system. automatic, 4 ready solutions for this file size · ~20 min 40 EUR
IMMO OFF Disables the immobilizer system so the vehicle can start and run. automatic, 5 ready solutions for this file size · ~180 min 50 EUR
WATERPUMP OFF Disables the water pump fault code. automatic, 11 ready solutions for this file size · ~5 min 5 EUR
REVLIMIT Adjusts the engine rev limiter (hard cut) point. automatic, 3 ready solutions for this file size · ~20 min 10 EUR
DTC OFF Permanently disables the fault codes (DTC) you select; you need to provide the P codes to turn off. done in this project ✓
REV ORI Restores your modified software file to its original factory state. automatic, stock file in archive · ~120 min 10 EUR
Have a EDC17C74 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

Bosch EDC17 is a widely used common-rail diesel ECU generation (Euro 4–6) with DFES fault-code tables. This unit is fitted to VW - AUDI - SEAT - SKODA - PORSCHE Car vehicles. Project #21550 was completed automatically by the ECUHARD file service for a VW - AUDI - SEAT - SKODA - PORSCHE Car vehicle running software 04L906026BT 1542 04L907309R. Disabled fault codes: P0030, P0031, P0032, P0036, P0037, P0038, P00D5, P0400, P0401, P0402, P0403, P0404, P0405, P0406, P040B, P040C, P040D, P041B, P045A, P045B, P045C, P045D, P045E, P045F, P046C, P0470, P0471, P0472, P0474, P0475, P0476, P0477, P0478, P047F, P0486, P048A, P048B, P048C, P048E, P049A, P049C, P0544, P0545, P1485, P1489, P2000, P2002, P2003, P2031, P2032, P2080, P2084, P23A0, P23A1, P23A3, P23A4, P23A6, P23A7, P241F, P2425, P2426, P2427, P242A, P242B, P242C, P2457, P246E, P246F, P2470, P247B, P2A01, P2BD2, P2BD3, P2BFA, P2BFB.

Frequently asked questions

What was done to this EDC17C74 file?

Operations performed: DPF OFF, EGR OFF, LAMBDA OFF, DECAT, NOX OFF, VMAX OFF, FLAPS OFF, DTC OFF. The modified file was checksum-corrected and delivered ready to flash.

Which fault codes (DTC) were disabled?

P0030 (HO2S Heater Control Circuit Bank 1 Sensor 1); P0031 (HO2S Heater Control Circuit Low Bank 1 Sensor 1); P0032 (HO2S Heater Control Circuit High Bank 1 Sensor 1); P0036 (HO2S Heater Control Circuit Bank 1 Sensor 2); P0037 (HO2S Heater Control Circuit Low Bank 1 Sensor 2); P0038 (HO2S Heater Control Circuit High Bank 1 Sensor 2); P00D5 (HO2S Sensor Correlation Bank 1 Sensor 1/Bank 1 Sensor 2); P0400 (Exhaust Gas Recirculation Flow); P0401 (Exhaust Gas Recirculation Flow Insufficient Detected); P0402 (Exhaust Gas Recirculation Flow Excessive Detected); P0403 (Exhaust Gas Recirculation Control Circuit); P0404 (Exhaust Gas Recirculation Control Circuit Range/Performance); P0405 (Exhaust Gas Recirculation Sensor "A" Circuit Low); P0406 (Exhaust Gas Recirculation Sensor "A" Circuit High); P040B (EGR Temperature Sensor "A" Circuit Range/Performance); P040C (EGR Temperature Sensor "A" Circuit Low); P040D (EGR Temperature Sensor "A" Circuit High); P041B (EGR Temperature Sensor "B" Circuit Range/Performance); P045A (EGR "B" Control Circuit); P045B (EGR "B" Control Circuit Range/Performance); P045C (EGR "B" Control Circuit Low); P045D (EGR "B" Control Circuit High); P045E (EGR "B" Control Stuck Open); P045F (EGR "B" Control Stuck Closed); P046C (EGR Sensor "A" Circuit Range/Performance); P0470 (Exhaust Pressure Sensor); P0471 (Exhaust Pressure Sensor Range/Performance); P0472 (Exhaust Pressure Sensor Low); P0474 (Exhaust Pressure Sensor Intermittent); P0475 (Exhaust Pressure Control Valve); P0476 (Exhaust Pressure Control Valve Range/Performance); P0477 (Exhaust Pressure Control Valve Low); P0478 (Exhaust Pressure Control Valve High); P047F (Exhaust Pressure Control Valve "A" Stuck Open); P0486 (Exhaust Gas Recirculation Sensor "B" Circuit); P048A (Exhaust Pressure Control Valve "A" Stuck Closed); P048B (Exhaust Pressure Control Valve "A" Position Sensor/Switch Circuit); P048C (Exhaust Pressure Control Valve "A" Position Sensor/Switch Circuit Range/Performance); P048E (Exhaust Pressure Control Valve "A" Position Sensor/Switch Circuit High); P049A (EGR "B" Flow); P049C (EGR "B" Flow Excessive Detected); P0544 (Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 1); P0545 (Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 1); P1485 (EGRV Circuit Malfunction); P1489 (EGR Flow Insufficient Detected); P2000 (NOx Trap Efficiency Below Threshold Bank 1); P2002 (Particulate Trap Efficiency Below Threshold Bank 1); P2003 (Particulate Trap Efficiency Below Threshold Bank 2); P2031 (Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 2); P2032 (Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 2); P2080 (Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 1); P2084 (Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2); P23A0 (O2 Sensor Exhaust Sample Error Bank 1 Sensor 2); P23A1 (O2 Sensor Exhaust Sample Error Bank 2 Sensor 2); P23A3 (Exhaust Heat Exchanger Exhaust Bypass Valve "B" Control Circuit Low); P23A4 (Exhaust Heat Exchanger Exhaust Bypass Valve "B" Control Circuit High); P23A6 (Exhaust Heat Exchanger Exhaust Bypass Valve "B" Stuck Open); P23A7 (Exhaust Heat Exchanger Exhaust Bypass Valve "B" Stuck Closed); P241F (EGR Cooler "B" Efficiency Below Threshold); P2425 (Exhaust Gas Recirculation Cooling Valve Control Circuit/Open); P2426 (Exhaust Gas Recirculation Cooling Valve Control Circuit Low); P2427 (Exhaust Gas Recirculation Cooling Valve Control Circuit High); P242A (Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 3); P242B (Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3); P242C (Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3); P2457 (EGR Cooler "A" Efficiency Below Threshold); P246E (Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 4); P246F (Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 4); P2470 (Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 4); P247B (Exhaust Gas Temperature Out of Range Bank 1 Sensor 4); P2A01 (HO2S Circuit Closed Loop (CL) Performance Bank 1 Senso); P2BD2 (Exhaust Aftertreatment System "A" Leak); P2BD3 (Exhaust Aftertreatment System "B" Leak); P2BFA (Exhaust Flow Control Valve "B" Control Circuit High); P2BFB (Exhaust Flow Control Valve "B" Control Performance). Each code is switched off in the ECU fault table, so it is no longer stored or shown by diagnostic tools.

What is the software version for this EDC17C74 file?

This project is for EDC17C74 with software numbers: 04L906026BT 1542, 04L907309R. The same operations apply to other vehicles running the same software.

Can I get the same tuning for my VW - AUDI - SEAT - SKODA - PORSCHE?

Yes. Sign in, upload your original ECU file (EDC17C74 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) (10 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 (EDC17C74 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 EDC17C74?

STAGE1 (10 EUR, automatic, 41 ready solutions for this file size); STAGE2 (40 EUR, automatic, 8 ready solutions for this file size); STAGE3 (200 EUR, automatic, 1 ready solution for this file size); ADBLUE OFF (5 EUR, automatic, 35 ready solutions for this file size); TVA OFF (5 EUR, automatic, 15 ready solutions for this file size); STARTSTOP OFF (40 EUR, automatic, 4 ready solutions for this file size); IMMO OFF (50 EUR, automatic, 5 ready solutions for this file size); WATERPUMP OFF (5 EUR, automatic, 11 ready solutions for this file size); REVLIMIT (10 EUR, automatic, 3 ready solutions for this file size); REV ORI (10 EUR, automatic, stock file in archive). Prices are per file.

I have a EDC17C74 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.

Is there an ECM Titanium driver for this EDC17C74 file?

Yes. The file is linked to ECM Titanium driver AXXX_400 (AUDI A4). Matched: the software range is identical to the driver reference. The driver tells the software where the maps of this ECU software are, so tools that use ECM drivers, including the ECUHARD Tuning Editor, can open the maps 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.