D8: Check Sensor Resistance

Reconnect PI026 & PI027
Measure the bank A sensor coil resistance between EM013/018 & EM013/027
Repeat for Bank B sensor, between EM013/017 & EM013/027

Is the resistance 500K Ohms to 620K Ohms?

Yes
Go to D9

No
Renew the sensor(s) & test the system for normal operation.