Trionic 8 engine control unit 55565020 55565020S for Saab 9-3 2.0 Turbo
The Saab 55565020 engine control unit has been professionally tested, prepared for installation and is covered by a warranty. The unit is supplied in VIRGIN condition, cleared and ready for programming. After installation, it must be programmed to the vehicle or cloned using data from the original ECU.
Applications of the Saab 55565020 ECU
Part numbers 55565020 and 55565020S are mainly found in the second-generation Saab 9-3, type 9440, particularly in vehicles manufactured between 2007 and 2011. The module may be used in Sport Sedan, SportCombi and Convertible models fitted with B207-series petrol engines.
- Saab 9-3 1.8t 150 hp – 2.0 Turbo engine, engine code B207E
- Saab 9-3 2.0t 175 hp – engine code B207L
- Saab 9-3 2.0T Aero 210 hp – engine code B207R
- Saab 9-3 II 9440 – selected versions with manual or automatic transmission
The commercial designation 1.8t does not indicate a 1.8-litre engine. Saab used a 1998 cm³ engine with the code B207E in this version. Before purchasing, compare the part number printed on the original module and verify the engine version, transmission type and vehicle equipment.
The vehicle model and year of manufacture alone are not sufficient to identify the correct ECU. The most important requirement is matching the 55565020 part number and confirming that the correct software can be installed for the specific VIN.
Common symptoms of a faulty Trionic 8 ECU
- the engine does not start or stalls without an obvious reason,
- faults appearing only after the ECU has warmed up,
- rough engine operation and misfires,
- no control of one or more fuel injectors,
- injector circuit fault codes P0201, P0202, P0203 or P0204,
- turbocharger control valve fault, such as P0245,
- limp mode, reduced power or incorrect boost control,
- intermittent loss of diagnostic communication with the engine control unit.
Similar symptoms may also be caused by damaged wiring, incorrect power supply, poor ground connections, ignition coils, fuel injectors or other vehicle components. A complete vehicle diagnosis should always be carried out before replacing the ECU.
How to program a Saab 55565020 VIRGIN ECU
The cleared 55565020S VIRGIN ECU must be programmed after installation in the vehicle. The standard procedure for the Saab 9-3 requires a Tech 2 diagnostic tool with a CANDi module and access to TIS2000 or GlobalTIS software.
Cloning the 55565020S engine control unit
An alternative to programming the VIRGIN unit is to clone the original engine control unit. When the original ECU can still be read, its complete data can be transferred to the replacement module using professional programming equipment compatible with Saab Trionic 8 control units.
After successful cloning, the replacement ECU contains the vehicle data, configuration and security information from the original module. In most cases, a correctly cloned unit is ready for direct installation. When the original ECU is completely damaged and its data cannot be recovered, the VIRGIN unit must be programmed using Tech 2 and SPS.
FAQ – Saab 55565020 55565020S engine control unit
Is the 55565020S ECU suitable for a Saab 9-3 1.8t with a B207E engine?
Yes. Part number 55565020S may be used in the Saab 9-3 1.8t with the 150 hp B207E engine. Despite the 1.8t designation, the actual engine capacity is 2.0 litres. The number on the original ECU and the vehicle configuration must be checked before purchase.
Is the Saab 9-3 55565020 ECU compatible with the Aero B207R version?
This part number may also be used in the Saab 9-3 Aero 2.0T with the B207R engine. Compatibility depends on the ECU part number and the correct software for the vehicle VIN, transmission and equipment specification.
Does the 55565020 VIRGIN ECU work as a Plug & Play unit?
No. A VIRGIN ECU has been cleared and prepared for reassignment, but it must be programmed using Tech 2 and SPS before the vehicle can be started. Without programming, the ECU will not communicate correctly with the vehicle security system.
Can data from the original 55565020S ECU be cloned?
Yes, provided that the memory of the original ECU can still be read. The data can be transferred to the replacement module using programming equipment compatible with Trionic 8. Cloning is often the quickest solution because it preserves the existing vehicle configuration.
The offered 55565020 55565020S engine control unit has been tested, prepared in VIRGIN condition, is ready for programming or cloning and is covered by a warranty.
