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Lancia Thesis

Type 841

In Motortune Pro
Control units24
On any adapter2 of 24
Service resetYes
Actuator tests135

Need to read fault codes, reset the service light or check a warning lamp on your Thesis without a workshop trip? Motortune turns your iPhone and an ELM327 / OBD-II adapter into a scanner for the Lancia Thesis (type 841): it walks every control unit it can reach, names each fault in plain language, resets the service reminder and runs guided service routines. Free to scan; the one-time $18.99 Motortune Pro adds the write features.

Control units

Every unit the catalog lists for this model, across its model years — your car carries a subset, which the app finds when it connects. The tag says what reaches each one: Any adapter MS-CAN adapter vLinker MS Special cable

  • Engine
    • Engine control unitAny adapterServiceActuators
  • Gearbox
    • AISIN YLII 5Any adapterActuators
  • Drivetrain
    • Suspension SACHSSpecial cableActuators
  • Brakes / ABS
    • ABS Lucas TRW ESPSpecial cableActuators
    • Brake assistant TRWSpecial cable
    • Parking brake LucasSpecial cableActuators
    • Telecheck EltracSpecial cableActuators
  • Steering
    • Power Steering SAGEM SpeedProSpecial cable
  • Airbags
    • Airbag MY99Special cable
  • Driver assistance
    • Cruise Control BoschSpecial cable
    • Parking Valeo CANSpecial cable
  • Instrument cluster
    • Instrument Panel NIPPON SEIKISpecial cableServiceActuators
  • Body
    • Body Computer MarelliSpecial cable
    • Marelli roof panelSpecial cableActuators
    • Passive Entry DELPHI FL/MFSpecial cable
    • Rear Doors MARELLISpecial cable
  • Doors
    • Driver Door MARELLISpecial cable
    • Passenger Door MARELLISpecial cable
  • Seats
    • Driver seat BitronSpecial cable
    • Passenger seat BitronSpecial cable
  • Lighting
    • Headlight HellaSpecial cableActuators
  • Climate
    • Climate Control Borletti/Hella CANSpecial cableActuators
    • Heater WEBASTOSpecial cableActuators
  • Infotainment
    • NavConnect SiemensSpecial cableActuators

What you can do

  • Read fault codes, every reachable unit
  • Freeze frame
  • Vehicle & control-unit info
  • Clear fault codesPRO
  • Service / oil resetPRO
  • Adaptations & resetsPRO
  • CalibrationsPRO
  • DPF & exhaustPRO
  • Gearbox learnsPRO
  • Actuator tests (135)PRO
  • Control-unit browser, DID explorer, raw consolePRO

Service functions and actuator tests are matched to each unit’s software version when you connect, so your car may show a subset.

Adapter

2 of 24 control units — including the engine — sit on the standard OBD pins, which any ELM327 v1.5+ adapter reaches. 22 need a make-specific pin-switching cable that Motortune doesn’t support yet.

See the recommended adapters →

Other Lancia models: Dedra 835 · Delta 111 · Delta 181 · Flavia JS · Kappa 838 · Lybra 839 · Musa 350 · Phedra 179 · Thema 834 · Thema LX · Voyager RT · Y 840 · Ypsilon 843 · Ypsilon 846 · Zeta 220

Thesis — frequently asked

Does Motortune work with the Lancia Thesis?

Yes. The Lancia Thesis (type 841) is in Motortune’s catalog with 24 control units, 2 of which Motortune can reach with the right adapter. Coverage is mapped from the diagnostic catalog; try Demo mode and the in-app compatibility check on your car before relying on it.

How do I read fault codes on a Lancia Thesis?

Plug an ELM327 / OBD-II adapter into the Thesis’s diagnostic socket, switch the ignition on, and connect from Motortune on your iPhone. It walks every control unit it can reach — engine, gearbox and more — and lists each fault in plain language with the unit that reported it. Reading codes is free; clearing them is part of the one-time Motortune Pro.

Can I reset the service light on a Thesis myself?

Yes. Motortune resets the service / oil-change reminder on the Lancia Thesis the way a workshop tester does, with a guided step-by-step sheet. The service reset is part of the one-time $18.99 Motortune Pro.

Which service functions does Motortune run on the Thesis?

Adaptations & resets, Calibrations, DPF & exhaust, Gearbox learns — 4 guided routines across this model’s control units. The app confirms each unit’s software version before offering one, so what you see on your car can be a subset. Part of Pro.

What adapter do I need for the Thesis?

2 of 24 control units — including the engine — sit on the standard OBD pins, which any ELM327 v1.5+ adapter reaches. 22 need a make-specific pin-switching cable that Motortune doesn’t support yet.

How much does Motortune cost?

Motortune is free to download and scan. The one-time $18.99 Motortune Pro adds clearing codes, the service reset, service functions, actuator tests and per-unit live data. No subscription, and one purchase covers every Alfa Romeo, Fiat, Abarth, Lancia, Jeep, Chrysler, Dodge, RAM, Peugeot and Citroën you own.

Motortune Pro

On the Thesis

$18.99 one-time

Reading fault codes is free. One purchase covers every Alfa Romeo, Fiat, Abarth, Lancia, Jeep, Chrysler, Dodge, RAM, Peugeot and Citroën in your garage, with Family Sharing. Try Demo mode first — no adapter needed.

Coming soon to the App Store

Coverage is mapped from a diagnostic catalog of these models and is provided as-is, with no warranty. Some cars may not respond, some features may be unavailable on your car’s software version, and some adapters may be incompatible — always confirm with Demo mode and the in-app compatibility check before relying on any result. Motortune is an independent diagnostic tool and is not affiliated with, sponsored by, or endorsed by Stellantis or any of its brands. Make, model and control-unit names appear here only to describe vehicle compatibility. All trademarks remain the property of their respective owners.