DTC P0155 - O2 Sensor Heater Circuit (Bank 2 Sensor 1)
WARNING: This page does not describe the selected car, but rather 24 other vehicles, including the 2019 Lincoln Navigator, 2019 Lincoln Nautilus, 2019 Lincoln MKZ, 2019 Lincoln MKT, and 2019 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
DTC DESCRIPTION P0155 - O2 SENSOR HEATER CIRCUIT (BANK 2 SENSOR 1)
| Description: This DTC sets when an open or short circuit is detected or the universal heated oxygen sensor bank 2, sensor 1 (HO2S21) heater current draw exceeds a calibrated limit. | |||
Possible Causes:
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| Diagnostic Aids: Inspect the connectors for signs of damage, water intrusion or corrosion. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST DZ . | ||