What it means
The heater control circuit for the Bank 2 Sensor 3 heated oxygen sensor has a general electrical fault. This code does not identify whether the fault is an open, short, or another circuit problem.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
How it works
The heater circuit warms the Bank 2 Sensor 3 oxygen sensor so it can begin reporting exhaust oxygen promptly. P0062 means the control module has detected an electrical fault in that heater circuit, but the code alone does not specify whether it is an open, short, or another circuit problem.
Common causes
Most likely first.
- Heater element failed or open
- Damaged heater wiring or connector
- Blown heater circuit fuse
- Oxygen sensor failure
Symptoms
- Check-engine light on
- Oxygen-sensor heater may warm slowly
- Fuel economy may decrease
- Emissions may increase
How to diagnose it
- Record freeze-frame data and check for other heater-circuit codes to see whether the issue affects only Bank 2 Sensor 3.
- Verify the vehicle's sensor layout and inspect the Bank 2 Sensor 3 connector and nearby exhaust-side wiring for damage, melting, or corrosion.
- Check the heater circuit fuse and test for supply and ground at the sensor connector using the wiring diagram.
- With the sensor disconnected, check the heater element and wiring for continuity or an open circuit, comparing results with the manufacturer's procedure.
- If the sensor and wiring pass, test the heater control circuit and module output according to the manufacturer's diagnostic procedure.
Common fixes
- Repair damaged wiring or connector terminals in the Bank 2 Sensor 3 heater circuit.
- Replace a blown heater-circuit fuse after checking for the cause of the failure.
- Replace Bank 2 Sensor 3 if its heater element is open or otherwise fails the manufacturer's test.
- Repair a confirmed heater-control or module-circuit fault.
Can I keep driving?
The vehicle may remain driveable if it runs normally, but emissions can increase while the Bank 2 Sensor 3 heater fault delays sensor operation. Avoid continued driving if the engine starts running poorly.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.