A4 Fuel Injector Control Module Replacement

Hello.

I'm having problems with the engine control unit (ECU) in my Audi A4 1.8 gasoline car.

The fuel pump is not working, but it starts working again when I try a different control unit.

Has anyone heard of anyone repairing a part like that?

Perhaps only a power transistor in that component is defective.

See you soon...

Hello,

First, we need to see if we can still access the device through its diagnostic interface.
If so, read the error codes. The outputs of control units are typically short-circuit proof.

If you can successfully read the access data and error memory, take the device to a radio/television technician or a computer monitor repair specialist so they can take a look at it.

If diagnostic access is not possible, check (or have checked) the power supply/stabilization in the control unit. If everything is okay there, the situation looks bad -> it's likely scrap.

Briefly: A diagnostic system is essential.

Best regards, Rainer.