How to choose ECU 55594703 WU
This is a Denso MB275700-3780 engine control unit for the Opel Astra H / Zafira B with the 1.7 CDTI engine. It is a Virgin version with the Car Pass (PIN) code reset and is ready to fit. The unit has been refreshed and the housing refurbished – the electronics have never been repaired.
ECU 55594703 WU numbers
The label of this unit shows:
- Opel / GM number: 55594703
- Letter code: WU (55594703WU)
- Denso number: MB275700-3780
- ECU type: Denso 1.7 CDTI
Why 1.7 CDTI ECUs fail
The Denso module is mounted low, in the left front wheel arch next to the bumper, so it is exposed to rain, road spray and snow. A damaged ECU causes starting and injector control problems, uneven running and misfires. Run a diagnosis before you buy.
How to get ECU 55594703 WU running
The Car Pass (PIN) code is reset, so after fitting you program the ECU in the car with Tech-2 or OP-COM. You can also use cloning included in the price: send the EEPROM and FLASH files from your ECU or the whole ECU, and we read the data and return both units. For an extra charge we do EGR OFF, tuning and – on versions with a DPF – DPF OFF. The warranty is 6 months.
How to check compatibility
The most reliable way is to compare labels. Your ECU should show the number 55594703 WU (55594703WU). This unit is intended for the Opel Astra H / Zafira B with the 1.7 CDTI engine, but the number decides the match, not the model or year.
Other Denso 1.7 CDTI Opel ECUs in stock
See also the article Opel 1.7 CDTI Denso ECUs – Astra H, Zafira, Corsa. Looking for a number other than 55594703 WU? Browse the Opel engine ECUs category or the Denso manufacturer page.
Frequently asked questions about ECU 55594703 WU
Where is the ECU on an Opel 1.7 CDTI?
In the left front wheel arch next to the bumper, close to the ground – which is why it is exposed to rain, road spray and snow.
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How do I program ECU 55594703 WU?
The ECU is a Virgin version with the Car Pass (PIN) code reset. After fitting it is programmed in the car with Tech-2 or OP-COM.
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Do you do EGR OFF or DPF OFF?
Yes, as paid services: EGR OFF, tuning and – on versions with a DPF – DPF OFF.
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Does ECU 55594703 WU fit my Opel Astra H / Zafira B?
Compare the label of your ECU with the number 55594703 WU (55594703WU). If it matches, the ECU fits.
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