Fault 5 / Fault Code 15

5: Control unit defective Fault code - 15 -

Possible Causes, Elimination, Remarks

Before renewing the control unit, check whether:

- there is any electrical interference from the ignition (for example if the spark plug caps are not correctly attached)

- there are any differences in potential caused by contact resistances (missing or poor earth/ground connections).

Important: A poor earth/ground connection may occur not only at the affected components but also at other important earthing/grounding points, for example transmission earth/ground connections (from the starter motor to the body and from the intermediate transmission housing to the earth/ground point on the combined plug connection at the rear right).







- earth/ground contact is present at control unit plug PIN 3, 52 and 37. These wires are connected to earth./ground. point II (in right of trunk).

Warning: When renewing the PDAS/ABS control unit, make sure that the PSD/ABS control unit for the 928 is not accidentally installed.




Distinguishing feature: part number.
928 control unit with PSD = 928 618 ... ..
911 Carrera 4 control unit = 964 618 ... ..