DTC 17515

NOTE:
- The heating for the oxygen sensors in front of the Three Way Catalytic Converters (TWC) is switched on with the fuel pump relay, i.a immediately at engine start.
- The diagnostic trouble code "P1107/17515" is set after engine start as soon as the heating current is greater than 10 A for longer than 80 ms at a battery voltage between 9 V and 16 V.