Error code

OBD2 P0058

OBD2P0058
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

HO2S Heater Control Circuit High.

Severity

moderateCan drive, but symptoms may affect performance and fuel efficiency.

Summary

P0058 indicates an issue with the heater control circuit of the heated oxygen sensor (HO2S) 2 on bank 2, where the signal voltage is higher than normal.

Symptoms

  • Rich-running condition
  • Lean-running condition
  • Increased fuel consumption
  • Loss of power
  • Rough idling
  • Visible black smoke from tail pipe
  • Hard starting in some cases
  • Illuminated CHECK ENGINE light

Common Causes

  • Burnt wiring caused by proximity to hot exhaust components
  • Short circuits due to burnt wiring
  • Bad connections or corrosion on connectors
  • Faulty ground connections
  • Blown fuses in the heater control circuit

Diagnosis

  1. Perform a visual inspection of all associated wiring and connectors for damage.
  2. Check continuity and resistance in the heater control circuit.
  3. Inspect the oxygen sensor element for discoloration or deposits.
  4. Replace faulty wiring, connectors, or sensors as needed.

Fixes

  • Repair damaged wiring or replace faulty components such as fuses, connectors, or oxygen sensors.

FAQ

What does P0058 mean?

P0058 indicates a high voltage issue in the heater control circuit of HO2S sensor 2 on bank 2.

How do I diagnose P0058?

Diagnose by inspecting wiring, checking continuity and resistance, and examining the oxygen sensor for damage or deposits.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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