If you are running an after market exhaust w/ a high-flow cat and are constantly getting that dreaded CEL, this part should fix it. It comes down to spacing your 02 sensor out of the direct airflow.
2 Faults Found:
- 16804 – Catalyst System; Bank 1: Efficiency Below Threshold
P0420 – 35-10 – – - Intermittent - 16795 – Secondary Air Injection System: Incorrect Flow Detected
P0411 – 35-00 – -
Car:
2000 1.8T New Beetle GLX running a GHL 2.5″ TB exhaust and GIAC software.
The steps should be identical to all MKIV’s. Placement of your sensors may vary based on your exhuats, but probably not.
