2003 T5 DTC

[igel513]

Hello everyone, I'm back.
pls help solve my hard starting issue.
DTC shows Central Electronic (high)
CEM 8C15
CEM 1A59
I used a PPC3 Code reader. I can't find these codes on the DTC list on this site.
Any advise will be greatly appreciated..
Thanks

Igel

[RickHaleParker]

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CEM-8C15 Front fog lamp relay. Signal missing. Permanent fault
Open circuit in front fog lamp relay circuit.

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CEM-1A59 Communication with the audio module (AUM). Signal missing

Diagnostic trouble code (DTC) information CEM-1A59

R3903867 Condition
Diagnostic trouble codes (DTCs) are stored if the central electronic module (CEM) registers that communication with the audio module (AUM) is not operating.
Note! In the event of CEM-1A5X diagnostic trouble codes (DTCs), the central electronic module (CEM) must not be replaced as the diagnostic trouble code (DTC) indicates a communication fault in the Control area network!

Substitute value
None.

Possible source

• No power supply to the audio module (AUM)
  Open-circuit in the ground lead to the audio module (AUM)
  Contact resistance in the terminals
  Open-circuit in the wiring for the CAN low speed network to the audio module (AUM)
  - The audio module (AUM) is not intended for this car (for example a used control module with different software/hardware).

Hint:
If several diagnostic trouble codes (DTCs) are stored in the central electronic module (CEM) for communication faults with other control modules in the low speed network, this indicates a common fault in the Control area network, see the wiring diagram.

Fault symptoms
The rheostat function on the audio system is not working
Cannot be controlled with the remote control
Buttons on the steering wheel are not working.