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TuningBot DTC Database · v4.37.15

P0158 O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainEmissionsOBD2

What P0158 means

P0158
O2 Sensor Circuit High Voltage (Bank 2 Sensor 2) Generic · emissions Data confidence 90%

The control module detected that the signal in the O2 Sensor circuit stayed above the expected operating range.

Symptoms

  • MIL illuminated
  • Possible increased fuel consumption
  • Possible unstable idle

Possible causes

  • Wiring short to positive
  • HO2S
  • ECM

Recommended checks

  • Read live sensor voltage/current and heater status
  • Inspect wiring and connectors
  • Check for exhaust leaks near the sensor
  • Check fuel trim values for upstream mixture faults

Related and nearby codes

How to read P0158

P

Powertrain: engine, transmission and driveline systems.

0

Generic SAE-standard code: same meaning on every make.

158

Specific fault index within the subsystem.

Frequently asked questions about P0158

What does P0158 mean?

O2 Sensor Circuit High Voltage (Bank 2 Sensor 2). The control module detected that the signal in the O2 Sensor circuit stayed above the expected operating range.

Is P0158 generic or manufacturer-specific?

P0158 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P0158 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

ECU tuningDyno-tested results by model and engine See the results →

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