P0058 — Oxygen sensor heater circuit voltage too high
The code indicates a problem with the heater circuit in the oxygen sensor located after the catalytic converter on bank 2. The heater helps the sensor reach operating temperature quickly for accurate readings. A high voltage signal means there could be a wiring issue, a short circuit, or a faulty sensor heater element.
Common causes
The cause is almost always one of a few things. Here they are — P0058 rarely comes from anything outside this list:
- Damaged or shorted oxygen sensor heater wiring
- Faulty oxygen sensor heater element
- Corroded or loose electrical connectors
- Blown fuse or relay for sensor heater circuit
Where to start
In the order a sensible mechanic would work — the cheap checks first, the expensive replacements only after:
- Inspect and repair wiring and connectors
- Check and replace blown fuses or relays
- Test oxygen sensor heater resistance
- Replace oxygen sensor if heater is faulty
That is what holds for P0058 in general. From here it depends on your engine — tell me which car it is and what it does, and I will give you the steps for it: real procedures, torque figures and diagrams instead of general advice.
Why TorqFix for your car?
Above is what the code means and why it appears. TorqFix goes further — it gives you specific procedures, torque values, wiring diagrams and pinouts for your exact engine, not generic steps for every car. Real workshop data (127,000+ diagrams, 10,000+ procedures), interpreted by AI in your language.
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Code breakdown
🔧 Related repair procedures
- AUDI: Removing and installing front exhaust pipe (right-side) with catalytic converter - vehicles with multitronic gearbox
- AUDI: Checking Lambda probe and Lambda control before catalytic converter
- AUDI: Removing and installing front exhaust pipe (left-side) with starter catalytic converter and main catalytic converter (vehicles with automatic gearbox)
- AUDI: Removing and installing starter catalytic converter
- AUDI: Removing and installing front exhaust pipe (left-side) with starter catalytic converter and main catalytic converter (vehicles with manual gearbox)
- AUDI: Removing and installing front exhaust pipe (right-side) with starter catalytic converter and main catalytic converter (vehicles with automatic gearbox)
- VW: Removing and installing catalytic converters
- VW: Removing and installing starter catalytic converter
- VW: Checking Lambda probe and Lambda control before catalytic converter
- AUDI: Removing and installing front exhaust pipe with catalytic converter
Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
The same code can mean different things on different makes. Match the meaning to your make before acting on it.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
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