DTC 17521

SAE VAG Description
P1113 17521 Bank1-Sensor1 Internal Resistance too High

G39 - Heated Oxygen Sensor (HO2S)
Note: Bank 1 Sensor 1
Z19 - Oxygen Sensor (O2S) Heater

- Oxygen sensor heater for oxygen sensor before Three Way Catalytic Converter (TWC) checking. Oxygen Sensor Heater For Oxygen Sensor Before Three Way Catalytic Converter (TWC) Checking