SIEMENS PPD1.2 / common failure

[CARPARTS]

Hi

About SIEMENS PPD1.2 / 03G906018EH / DIESEL SIMOS / 5WP45565 AB

Engine crank, but won't start

VCDS fault :

001602 - Sensor Reference Voltage A: Circuit
P0642 - 007 - Low


It's a common fault in those ECU's
I guess that the injectors maybe don't get power supply...

Anyone have solution to repair this ECU ?

Thanks

429482

[avtonega]

Hi

I think you have one faulty injector

[gttuning]

001602 - Sensor Reference Voltage A: Circuit
P0642 - 007 - Low
This dosent mean that ecu is faulty.
You have short circuit on 5v line and this 5v line is supplying 5v to your crank sensor or injectors r other sensors.
I had same thing on seat 2014.work out was dpf pressure sensor.(thats why its not starting.)
The way i figure out this is unplug all sensors in engine bay like air flow meter dpf sensor..crank and cam sensors and see when you dtc will clear.


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