P0062
HO2S Heater Control Circuit Bank 2 Sensor 3
Generic electrical fault in the heater control of bank 2 sensor 3. The sensor heater warms the element to operating temperature (~600 °C); without it the lambda sensor stays inactive in closed loop and the ECM cannot trim mixture.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Heater element openCommon
Parts involved
- Oxygen Sensor B2s3 Heater
- Heater Wiring
P0062 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.