P0062 HO2S Heater Control Circuit Bank 2 Sensor 3

P0062 indicates a heater control circuit fault for bank 2 sensor 3. The control path for that heated oxygen sensor is not behaving correctly.

Code details

Generic OBD-II · P0

System: Fuel / Air
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not replace unrelated oxygen sensors before confirming the exact bank 2 sensor 3 heater control path.

Symptoms of P0062

Check-engine light on, sometimes with rough or uneven running.
Hesitation, surging, or a noticeable change in fuel economy.
Occasionally hard starting or a smell of unburnt fuel.

Common causes of P0062

A failing or contaminated sensor (MAF, MAP, oxygen or air-fuel sensor).
Intake or vacuum leaks, or an exhaust leak near an upstream sensor.
Wiring, connector, or fuel-delivery problems that skew the reading.

Useful checks before replacing parts

Check heater feed voltage, ground or driver command, resistance, fuse supply, connector condition, and loaded circuit voltage.
Inspect wiring near exhaust heat, oxygen sensor connector pins, harness clips, and shared heater circuits for other sensor codes.
Compare heater command with sensor warm-up time and verify the fault belongs to bank 2 sensor 3.

Related OBD-II codes

These nearby fuel / air entries can help compare wording and pin down the fault area.