P0152 The upstream oxygen sensor on bank 2 is sending a voltage higher than the computer thinks is possible

Oxygen sensor circuit high voltage (bank 2 sensor 1)

Severity not verified — if the car runs badly, have it inspected

No source we read says how urgent this code is, so we have not set a severity; have it read and checked rather than assuming it is harmless.

Source: how we rate severity

P0152 in short

P0152 means the oxygen sensor ahead of the catalytic converter on bank 2 (sensor 1) is reporting a voltage higher than is physically possible. A failed sensor, a wire shorted to power, or a damaged connector are the usual causes. The check engine light is typically the only sign.

Bank 2 is the side of the engine that does not hold cylinder 1, and sensor 1 is the one ahead of the catalytic converter. The engine computer uses it to adjust fuel.

TroubleCodes.net says the code sets when the computer sees sensor voltage higher than the sensor can physically produce. Because the sensor monitors emissions rather than running the engine, most drivers notice nothing but the light.

The Delaware DMV list titles P0152 as the same bank 2 sensor 1 high-voltage fault, so the meaning is consistent.

Most likely causes

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

  1. Failed bank 2 sensor 1 oxygen sensor

    Common general cause
    Why it ranks here
    TroubleCodes.net lists the sensor itself first, noting a typical life under five years.
    What would change this
    A stuck high reading on live data raises it; a normally switching signal lowers it.
    How to test the oxygen (o2) sensor

  2. Wiring shorted to positive, or damaged circuit

    Common general cause
    Why it ranks here
    A short to positive voltage is listed; road debris and corrosion damage the circuit.
    What would change this
    A wire that tests shorted to power, or a visibly damaged harness, confirms it.

  3. Water in the connector or corroded terminals

    Possible — needs testing
    Why it ranks here
    Water entry and connector problems are listed on the same page.
    What would change this
    Moisture or corrosion at the connector raises it.

What to test first

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

  1. Read live data for bank 2 sensor 1 and compare it with the bank 1 sensor.

    Low riskTool: scan tool with live data

    • IfBank 2 sensor 1 sits stuck high while bank 1 switches normally

      It meansThe sensor or its circuit is at fault.

      Go to step 2

    • IfBoth read normally

      It meansThe fault may be intermittent; inspect the circuit.

      Go to step 2

  2. Inspect the fuses, wiring, connector and sensor for damage or corrosion, and look for exhaust leaks between the converter and sensor.

    Use caution

    Warning:Exhaust parts stay very hot long after the engine is off; let the exhaust cool before touching or working near the sensor.

Symptoms

  • Check engine light
  • Usually no change in how the car drives

How to fix

  1. With the engine cool, look at the sensor wiring on bank 2 for damage, and check the connector for corrosion or water.

Parts and cost context

  • Oxygen (O2) sensor:Confirm the circuit before replacing the sensor, and make sure the replacement is the one for bank 2 sensor 1.

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

Compare used part prices on PartPriceGuide

On your vehicle

Ram

  • 2023 · 1500

    Supported by vehicle data

    Ram bulletin S2308000118 lists the MIL on with P0052, P0152 (O2 sensor high) and P0113. Whether it is still current is not verified.

  • S2308000118Status unverified

    Ram bulletin: MIL on with P0052, P0152 (O2 sensor high) and P0113

    20231500 · issued · NHTSA 10244412

    Ram bulletin S2308000118 for the 2023 1500. The summary lists the MIL on with P0052, P0152 (O2 sensor high) and P0113 (intake air temperature sensor). Only the NHTSA summary was read, not the full bulletin; the summary does not give the repair.

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

Chrysler

  • 2006 · PT Cruiser

    Supported by vehicle data

    Chrysler bulletin 1801306 says P0152 and several other codes are being reported incorrectly in place of P2149, P0132, P0131, P0087 and P0088. Whether it is still current is not verified.

  • 1801306Status unverified

    Chrysler bulletin: P2152, P0152, P0154, P0151, P0089, P0091 and P0092 reported incorrectly

    2006pt-cruiser · issued · NHTSA 10019942

    Chrysler bulletin 1801306 for the 2006 PT Cruiser. The summary says a group of codes including P0152 is being reported incorrectly in place of P2149, P0132, P0131, P0087 and P0088. Only the NHTSA summary was read, not the full bulletin; the summary does not give the repair.

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

Nissan

  • 2001–2002 · Frontier

    Supported by vehicle data

    Nissan bulletin 04002A lists P0152 among multiple front and rear O2 sensor codes with the MIL on. Whether it is still current is not verified.

  • 2001–2002 · Xterra

    Supported by vehicle data

    Nissan bulletin 04002A lists P0152 among multiple front and rear O2 sensor codes with the MIL on. Whether it is still current is not verified.

  • 04002AStatus unverified

    Nissan bulletin: MIL on with multiple front and rear O2 sensor codes including P0152

    2001–2002frontier, xterra · issued · NHTSA 10005192

    Nissan bulletin 04002A for the 2001-2002 Frontier and Xterra. The summary says the MIL is on with multiple front and rear O2 sensor codes (P0134, P0154, P0140, P0160, P0132, P0152, P0138, P0158) and that it replaced bulletin 04002 dated 02/05/2004. Only the NHTSA summary was read, not the full bulletin; the summary does not give the repair.

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

Cadillac

  • 2003 · Deville

    Supported by vehicle data

    Cadillac bulletin 030604040 covers revised DTCs P0132 and P0152. Whether it is still current is not verified.

  • 030604040Status unverified

    Cadillac bulletin: revised diagnostic trouble codes P0132 and P0152

    2003deville, seville · issued · NHTSA 10004376

    Cadillac bulletin 030604040 for the 2003 DeVille and Seville. The summary says only that DTC P0132 and DTC P0152 are revised. Only the NHTSA summary was read, not the full bulletin; the summary 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 P0152 yet.

All Oxygen sensors codes

P0152 questions

Can I drive with P0152?

TroubleCodes.net says most drivers notice no change in driving, but the sensor helps the computer set fuel, so have it checked soon.

Sources and review

  1. P0152 trouble code — TroubleCodes.net
  2. On-Board Diagnostic Trouble Codes (generic code title list) — Delaware Division of Motor Vehicles
  3. S2308000118: Ram bulletin: MIL on with P0052, P0152 (O2 sensor high) and P0113 — Ram
  4. 1801306: Chrysler bulletin: P2152, P0152, P0154, P0151, P0089, P0091 and P0092 reported incorrectly — Chrysler
  5. 04002A: Nissan bulletin: MIL on with multiple front and rear O2 sensor codes including P0152 — Nissan
  6. 030604040: Cadillac bulletin: revised diagnostic trouble codes P0132 and P0152 — Cadillac
Last reviewed
Written by
Saurabh K.
Editorial review
Pending
Technician review
Technician review pending

This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error

My Car

Pick your car and code pages will point out notes and bulletins for it. Saved only in this browser.

Fill this in from your VIN

Used once to identify your engine; not stored.