HO2S Heater Control Circuit High Bank 2 Sensor 2
What it means
P0058 means the ECM detected an abnormally high voltage in the heater control circuit of the bank 2, sensor 2 oxygen sensor — the downstream sensor behind the catalytic converter. The heater brings the sensor up to temperature so it can monitor catalyst efficiency. A high-voltage fault usually points to a wiring short, a failed heater element, or a corroded connector. The engine runs normally, but emissions monitoring is affected.
Can I keep driving? Safe to drive — the engine runs normally. This is a downstream oxygen-sensor heater circuit fault, so expect a warning light and a possible failed emissions test until repaired.
Common symptoms
What you'll notice
- Check-engine light on
- Failed or incomplete emissions readiness / smog test
- Slightly reduced fuel economy
- Delayed closed-loop / catalyst monitoring
Common causes
Most likely first
- Short to voltage in the oxygen-sensor heater control circuitLikely
- Failed oxygen-sensor heater element (bank 2 sensor 2, downstream)Common
- Corroded or damaged connector or wiring at the sensorCommon
- Moisture or corrosion in the sensor connectionLess often
- Failed engine control module heater driver (rare)Less often
How to diagnose & fix
Work through it in order
- Scan and confirm the code, then locate the downstream sensor on bank 2.
- Inspect the connector and wiring for a short to voltage, corrosion, or moisture.
- Measure the sensor's heater resistance and compare against specification.
- Repair damaged wiring or clean corroded connections.
- Replace the oxygen sensor if the heater element has failed; check the ECM driver last.
FAQ
Quick answers
Is it safe to drive with P0058?+
Can I just clear P0058?+
Related codes
Often seen with P0058
Read & clear P0058 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.