Defect Code 28

Defect code 28:

•D• 900 Defect code memory: 28 Oxygen sensor:

Explanation: This defect code is stored when a short or a break occurs at the oxygen sensor or on its supply wires.

A prerequisite for defect detection is an engine temperature of 70 °C and a load signal of > 3 ms for> 3 sec.

Troubleshooting: As displayed on screen. For test values, see - Component Testing -.
Oxygen Sensor