P2237-13: O2 Sensor Positive Current Control Circuit/Open - Bank 1, Sensor 1 - Circuit open: Action
- Refer to the applicable SYSTEM WIRING DIAGRAM(S) and check heated oxygen sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Using the manufacturer approved diagnostic system clear all stored DTCs using the `Diagnosis Menu' tab and retest
- Check and install a new heated oxygen sensor as required