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Hi new here, wondering if anyone has seen something like this before.
2003 jetta
turned the car on today and it dies after a second.
on the cluster the key light was on.
in the odometer at first it says service then changes to say mileage is 651533 miles (only really at 91k)

vag-com says i have two faults 16804 and 17978.

 

[Keithuk]

Welcome to the forum. welcometomyturbodies

vag-com says i have two faults 16804 and 17978.

VAG Error Code: 16804

Fault Location:
Catalytic converter system, bank 1 - efficiency below threshold

Possible Cause:
Catalytic converter.


VAG Error Code: 17978
EOBD II Error Code: P1570

Fault Location:
Engine control module (ECM) - immobilizer active

Possible Cause:
Incorrect/damaged key.
Incorrectly coded.
Engine control module (ECM)/Immobilizer replacement without coding.
Wiring.
Immobilizer defective.


As taken from my http://www.myturbodiesel.com/forum/f9/free-eobd-ii-error-codes-software-2919/