N47T Oxygen Sensor Faults Caused By Thermal Shock Damage

Bulletin number

B110216

Component

Electrical system

Summary

N47T Oxygen Sensor Faults Caused By Thermal Shock Damage. Service Engine Soon (MIL) is illuminated with any of the following faults stored in the DDE: 282D00 - Oxygen sensor before catalytic converter, heating, activation: Short circuit to B+ 282E00 - Oxygen sensor after catalytic converter, heating, activation: Short circuit to B+ 283000 - Oxygen sensor after catalytic converter, heating, activation: Short circuit to ground 283300 - Oxygen sensor before catalytic converter, heating, activation: Open circuit 283400 - Oxygen sensor after catalytic converter, heating, activation: Open circuit 284E00 - Oxygen sensor after catalytic converter, Nernst voltage, signal: Open circuit 284F00 - Oxygen sensor before catalytic converter, pump current, signal: Open circuit 285000 - Oxygen sensor after catalytic converter, pump current, signal: Open circuit 285100 - Oxygen sensor before catalytic converter, virtual ground, signal: Open circuit 285200 - Oxygen sensor after catalytic converter, virtual ground, signal: Open circuit 285A00 - Oxygen sensor after catalytic converter, signal: Short circuit to B+ The oxygen sensor heating is active before normal moisture condensation in the exhaust has been eliminated during engine operation (dew point is not reached) resulting in incorrect sensor operation.

Owners of these vehicles have filed 10 complaints in the electrical category.