P0158 Oxygen sensor signal voltage reads too high, bank 2 sensor 2

O2 sensor circuit high voltage (bank 2, sensor 2)

Monitor

This is an oxygen sensor fault after the catalytic converter that mostly affects emissions monitoring, so the car can normally be driven while you book a check.

It gets more serious if:

  • Inspect soon: Get it inspected soon if the engine runs rough, hesitates badly or stalls, since other faults may be involved.

Source: how we rate severity

P0158 in short

P0158 means the computer has found a high voltage in the circuit of the oxygen sensor after the catalytic converter on bank 2. The usual causes are a failed sensor or damaged wiring and connectors. The car is normally driveable, but the fault can hide other problems and will fail an emissions inspection, so get it checked.

The Delaware DMV list and TroubleCodes.net both define P0158 as an oxygen sensor fault on bank 2 (high voltage). Bank and sensor numbers come from the carmaker, so check service information for which sensor is which on your engine.

Reference pages say the sensor itself is the most common failure, with wiring and connector damage next. Sources describe the symptoms as mild; often only the warning light shows.

Most likely causes

These are general causes for this code across vehicles. None is specific to one make or model.

  1. Failed or contaminated oxygen sensor

    Common general cause
    Why it ranks here
    TroubleCodes.net lists the sensor itself as a leading cause.
    What would change this
    Rises if the sensor signal is stuck or out of range on live data. Falls if the signal looks normal and moves.
    How to test the oxygen (o2) sensor

  2. Damaged or corroded wiring or connector

    Common general cause
    Why it ranks here
    TroubleCodes.net lists wiring and connector damage as the other main cause.
    What would change this
    Rises if the harness or plug shows damage or corrosion. Falls if wiring and connector are clean and intact.

What to test first

Start at step 1. Each result tells you what it means and where to go next.

  1. Read all stored codes and note any other oxygen sensor codes stored with P0158.

    Low riskTool: OBD-II scan tool

    • IfSeveral oxygen sensor codes are stored

      It meansA shared wiring or power problem is possible.

      Go to step 2

    • IfP0158 is the only code

      It meansCheck the wiring and connector at the sensor.

      Go to step 2

  2. Look over the sensor wiring and connector for damage, burns or corrosion.

    Best left to a shop

    Warning:Exhaust parts are very hot after driving and a seized sensor can be damaged or break the thread when removed. Let the exhaust cool and have a shop do it.

Symptoms

  • Check engine light
  • Failed emissions inspection
  • No change in driving is usual; the check engine light is often the only sign

How to fix

  1. With the engine off and cool, look at the sensor connector and wiring for damage or corrosion.

Parts and cost context

  • Oxygen (O2) sensor:Confirm which sensor is bank 2 sensor 2 on your engine. Labour varies; get a quote.

Labor varies by vehicle and shop; get a quote before you approve a repair.

Compare used part prices on PartPriceGuide

On your vehicle

Jeep

  • 2019–2020 · Wrangler

    Supported by vehicle data

    FCA bulletin S2108000025 covers a check engine lamp on with P0158 (O2 sensor 2/2 circuit high) on 2019-2020 Wrangler. Whether it is still current is not verified.

  • S2108000025 (jeep)Status unverified

    Check engine lamp on with P0158 (O2 sensor 2/2 circuit high)

    2019–2020wrangler · issued · NHTSA 10187084

    FCA bulletin for 2019-2020 Wrangler with the check engine lamp on and P0158, O2 sensor 2/2 circuit high. Only the NHTSA summary was read; it does not give the repair.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Ram

  • 2019–2021 · 1500

    Supported by vehicle data

    FCA bulletin S2108000025 covers a check engine lamp on with P0158 (O2 sensor 2/2 circuit high) on 2019-2021 Ram 1500. Whether it is still current is not verified.

  • S2108000025 (ram)Status unverified

    Check engine lamp on with P0158 (O2 sensor 2/2 circuit high)

    2019–20211500 · issued · NHTSA 10187081

    FCA bulletin for 2019-2021 Ram 1500 with the check engine lamp on and P0158, O2 sensor 2/2 circuit high. Only the NHTSA summary was read; it does not give the repair.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Nissan

  • 2018 · Armada

    Supported by vehicle data

    Nissan bulletin NTB18-062b covers a MIL on with P0138 and/or P0158 on 2018 Armada and Titan; the summary notes it has been amended. Whether it is still current is not verified.

  • NTB18-062bStatus unverified

    MIL on with P0138 and/or P0158 on 2018 Armada and Titan

    2018armada, titan · issued · NHTSA 10167374

    Nissan bulletin (amended) for 2018 Armada and Titan with the MIL on and P0138 and/or P0158. Only the NHTSA summary was read; it does not give the repair.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Ford

  • 2014–2015 · Explorer

    Supported by vehicle data

    Ford TSB 16-0144 covers an illuminated MIL with P0138 and/or P0158 on some 2014-2015 Explorer and Taurus with a 3.5L or 3.7L Ti-VCT engine. Whether it is still current is not verified.

  • TSB 16-0144Status unverified

    MIL with P0138 and/or P0158 on 3.5L or 3.7L Ti-VCT engines

    2014–2015explorer, taurus · issued · NHTSA 10090509

    Ford bulletin for some 2014-2015 Explorer and Taurus with a 3.5L or 3.7L Ti-VCT engine and an illuminated MIL with P0138 and/or P0158 stored in the PCM. Only the NHTSA summary was read; it does not give the repair.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Acura

  • 2014 · MDX

    Supported by vehicle data

    Honda bulletin IN-142702 reports an investigation into P0158 and P0138 (front and rear secondary heated oxygen sensor circuit high voltage) with the MIL on, 2014 MDX. Whether it is still current is not verified.

  • IN-142702Status unverified

    Investigation of P0158 and P0138 with the MIL on, 2014 MDX

    2014mdx · issued · NHTSA 10055124

    Honda information bulletin on an investigation into P0158 and P0138 (front and rear secondary heated oxygen sensor circuit high voltage) with the MIL on, 2014 MDX. Only the NHTSA summary was read; it does not give the repair.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Toyota

  • 2005–2010 · Camry

    Supported by vehicle data

    Toyota bulletin T-SB-0001-10 covers a MIL on with P0138 and/or P0158 (oxygen sensor circuit high voltage, bank 1 or 2) on some 2005-2010 Camry and other Toyota models. Whether it is still current is not verified.

  • T-SB-0001-10 RevStatus unverified

    MIL on with P0138 and/or P0158 (oxygen sensor circuit high voltage)

    2005–2010avalon, camry, highlander, rav4, sienna, venza · issued · NHTSA 10132202

    Toyota bulletin for some 2005-2010 Avalon, Camry, Highlander, RAV4, Sienna and Venza with the MIL on and P0138 and/or P0158, described as oxygen sensor circuit high voltage, bank 1 or 2. Only the NHTSA summary was read; it does not give the repair.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

No curated relationships for P0158 yet.

All Oxygen sensors codes

P0158 questions

Is P0158 the sensor before or after the catalytic converter?

After. Sensor 2 sits downstream of the catalytic converter.

Sources and review

  1. P0158 - Oxygen Sensor Circuit (High Voltage) — TroubleCodes.net
  2. Jeep bulletin S2108000025: Check engine lamp on with P0158 (O2 sensor 2/2 circuit high) — FCA US (Stellantis) (filed with NHTSA) ,
  3. Ram bulletin S2108000025: Check engine lamp on with P0158 (O2 sensor 2/2 circuit high) — FCA US (Stellantis) (filed with NHTSA) ,
  4. Nissan bulletin NTB18-062b: MIL on with P0138 and/or P0158 on 2018 Armada and Titan — Nissan (filed with NHTSA) ,
  5. Ford bulletin TSB 16-0144: MIL with P0138 and/or P0158 on 3.5L or 3.7L Ti-VCT engines — Ford Motor Company (filed with NHTSA) ,
  6. Acura bulletin IN-142702: Investigation of P0158 and P0138 with the MIL on, 2014 MDX — American Honda (filed with NHTSA) ,
  7. Toyota bulletin T-SB-0001-10 Rev: MIL on with P0138 and/or P0158 (oxygen sensor circuit high voltage) — Toyota (filed with NHTSA) ,
  8. On-Board Diagnostic Trouble Codes (generic code title list) — Delaware Division of Motor Vehicles
Last reviewed
Written by
Saurabh K.
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