P0524 Engine oil pressure too low

Low engine oil pressure

P0524 in short

P0524 means the engine computer measured oil pressure lower than it should be. Low or worn-out oil is the most common cause; a sticking oil pressure control valve, a bad sensor or connector, an internal oil leak or worn bearings are others. Stop the engine and check the oil level before driving further.

An oil pressure sensor reports pressure to the engine computer. When the reading stays below the expected value for the engine speed and temperature, it sets P0524. Some engines also show an oil pressure warning, but owners report the code without one.

Start with the oil. A low level or the wrong or degraded oil is the usual cause. After that, makers' bulletins point to a stuck oil pressure control valve from debris (Mazda), liquid in the sensor connector (Ford F-150), an internal leak at an oil gallery seal (Ford 3.0L), and heavy oil consumption from worn valve guides (Ford 2.7L and 3.0L).

Only a mechanical gauge reading tells you whether pressure is really low or the sensor is wrong. Until that is known, treat it as real low pressure.

Most likely causes

  1. Low oil level or wrong or degraded oil

    Common general cause
    Why it ranks here
    The simplest and most common reason oil pressure drops. An NHTSA complaint describes P0524 with a nearly dry crankcase and no oil warning.
    What would change this
    Rises if the dipstick reads low or the oil is overdue for a change. Falls if the oil is full and fresh.

  2. Sticking oil pressure control valve or relief valve from debris (Mazda)

    Supported by vehicle data
    Why it ranks here
    Mazda bulletins tie P0524 to debris at the oil pump relief valve or oil control valve, a solenoid stuck by contaminated oil, machining debris in the control valve, and slow valve response fixed with PCM software on the CX-5.
    What would change this
    Rises on the listed Mazdas with no engine noise and normal oil level.
    How to test the engine oil pump

  3. Liquid in the oil pressure sensor connector or a failed sensor

    Supported by vehicle data
    Why it ranks here
    Ford SSM 46526 traces P0521 through P0524 on 2016-2017 F-150 3.5L and 5.0L engines to liquid in the oil pressure sensor connector.
    What would change this
    Rises if a mechanical gauge shows normal pressure while the scan tool shows low.

  4. Internal oil leak at an oil gallery seal (Ford 3.0L)

    Supported by vehicle data
    Why it ranks here
    Ford SSM 51764 points P0521 and P0524 on the 3.0L Explorer to an internal oil pressure leak; check gallery tube alignment and replace the gallery seal.
    What would change this
    Rises if real pressure is low with full, correct oil on the listed engines.

  5. High oil consumption from worn valve guides (Ford 2.7L and 3.0L)

    Supported by vehicle data
    Why it ranks here
    Ford TSB 19-2243 covers oil consumption with P0524 and P06DD on some 2016-2017 Edge, Fusion, MKX, MKZ and Continental with 2.7L or 3.0L engines built in a set window; the fix is new cylinder heads.
    What would change this
    Rises if the oil level keeps dropping between changes with no visible leak.

  6. Worn engine bearings or oil pump

    Possible — needs testing
    Why it ranks here
    Worn bearings and a weak pump let pressure bleed off. An NHTSA complaint describes P0524 with engine bearing failure.
    What would change this
    Rises with knocking, high mileage, or low gauge pressure despite correct oil.
    How to test the engine oil pump

What to test first

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

  1. With the engine off on level ground, check the oil level and condition on the dipstick.

    Low risk

  2. Ask a dealer whether a bulletin covers P0524 on your VIN; Mazda and Ford have several.

    Low risk

  3. Have a shop fit a mechanical oil pressure gauge in place of the sensor and compare the reading with the specification and with the scan tool.

    Best left to a shopTool: mechanical oil pressure gauge, scan tool

    Warning:Don't keep running an engine that may have low oil pressure. A shop will run it only briefly to take the reading.

Symptoms

  • Oil pressure warning light or message Gets more serious: stop and have it checked.
  • Check engine light, sometimes with no oil warning
  • Ticking, rattling or knocking from the engine Gets more serious: stop and have it checked.
  • Reduced power or limp mode (reported on the Ford Bronco 2.7L) Gets more serious: stop and have it checked.

How to fix

We don't give DIY repair steps for a Stop code. Get the car inspected before you drive it; the tests above help you understand what a technician will check.

Parts and cost context

  • Engine oil pump:Confirm real oil pressure with a gauge before replacing the pump; on many engines it sits in the oil pan or behind the timing cover, so it is a large job. Labor 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

Mazda

  • 2013–2025 · CX-5

    Supported by vehicle data

    Several Mazda bulletins link P0524 to a sticking oil control or relief valve, from debris or contaminated oil, and one to PCM software. Whether the bulletin is still current is not verified.

  • 2012–2025 · Mazda3

    Supported by vehicle data

    Mazda links P0524 to debris in the oil control or relief valve. Whether the bulletin is still current is not verified.

  • 01-009-16Status unverified

    P0015/P0524: debris at oil pump relief valve or oil control valve

    2012–2016cx-5, mazda3, mazda6 · issued · NHTSA 10090817

    Debris in the relief valve or oil control valve can cause P0015 or P0524.

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

  • 01-020-18Status unverified

    P0524 from slow oil control valve response

    2018cx-5 · issued · NHTSA 10148006

    PCM software update.

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

  • 01-004-21Status unverified

    P0524/P055F: oil solenoid stuck by contaminated oil

    2018–2021cx-5 · issued · NHTSA 10188014

    Oil solenoid valve stuck from contaminated oil.

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

  • SA-048-26Status unverified

    P0524: oil pressure control valve with machining debris

    2023–2025mazda3, cx-30, cx-5, cx-50 · issued · NHTSA 11037006

    Machining debris in the oil pressure control valve can set P0524 with no abnormal engine noise.

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

Ford

  • 2016–2017 · F-150

    Supported by vehicle data

    On 3.5L and 5.0L engines, Ford traces P0524 to liquid in the oil pressure sensor connector (SSM 46526). Whether the bulletin is still current is not verified.

  • 2016–2017 · Edge

    Supported by vehicle data

    Some 2.7L engines built April 2016 to January 2017 burn oil from worn valve guides, setting P0524 (TSB 19-2243). Whether the bulletin is still current is not verified.

  • 2020–2023 · Explorer

    Supported by vehicle data

    On the 3.0L, Ford points to an internal leak at an oil gallery seal (SSM 51764). Whether the bulletin is still current is not verified.

  • 2021 · Escape

    Supported by vehicle data

    Ford updated the 1.5L low oil pressure diagnosis in the Workshop Manual (SSM 49744). Whether the bulletin is still current is not verified.

  • TSB 19-2243Status unverified

    2.7L/3.0L oil consumption with P0524/P06DD

    2016–2017edge, fusion, mkx, mkz, continental · issued · NHTSA 10164421

    Oil consumption from valve guides on engines built 1 April 2016 to 1 January 2017; replace cylinder heads.

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

  • SSM 46526Status unverified

    P0521-P0524: liquid in oil pressure sensor connector

    2016–2017f-150 · issued · NHTSA 10109014

    Replace the oil pressure sensor and inspect the seals at connector C1657.

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

  • SSM 49744Status unverified

    1.5L P0524 low oil pressure warning

    2021escape, bronco-sport · issued · NHTSA 10191097

    Workshop Manual diagnostics updated.

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

  • SSM 51764Status unverified

    P0521/P0524 from internal oil pressure leak

    2020–2023explorer, navigator · issued · NHTSA 10238468

    Check oil gallery tube alignment and replace the gallery seal.

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

  • P0521Engine oil pressure sensor or switch range/performance

    Same system Supported by vehicle data

    P0521 means the oil pressure reading is out of range. Ford groups P0521 through P0524 for the F-150 sensor connector fault and P0521 with P0524 for the 3.0L gallery seal.

  • P06DDOil pump pressure control not responding, as if stuck off

    Shares causes Supported by vehicle data

    Ford TSB 19-2243 lists P0524 with P06DD from oil consumption on some 2.7L and 3.0L engines, and a Bronco owner reports both codes together.

  • P0520Engine oil pressure sensor or switch circuit malfunction

    Same system Possible — needs testing

    P0520 is a fault in the oil pressure sensor circuit itself; Ford's F-150 connector bulletin covers the same sensor.

All Vehicle speed, idle control and engine electrical codes

P0524 questions

Can I drive with P0524?

Not until you know the oil pressure is good. Stop, check the oil level, and have pressure measured with a gauge. Driving on real low oil pressure can ruin the engine quickly.

Why is there no oil light with P0524?

The code can set before the warning light threshold is reached; an owner reported P0524 with a nearly empty crankcase and no light. Check the dipstick whenever this code appears.

Sources and review

  1. Kelley Blue Book: P0524 Engine Oil Pressure Too Low — Kelley Blue Book
  2. TAT Scandata: P0524 Engine Oil Pressure Low — Technical Assistance Team (TAT), Australia
  3. NHTSA complaint ODI 11609980: 2018 Nissan Titan, P0524 with bottom-end knock and engine failure — NHTSA Office of Defects Investigation (complaint flat file) ,
  4. NHTSA complaint ODI 11762488: 2020 Kia Telluride, P0524 with empty crankcase and knock — NHTSA Office of Defects Investigation (complaint flat file) ,
  5. Mazda 01-009-16: rough idle with P0015/P0524 from debris at oil pump relief valve or oil control valve — Mazda / NHTSA ,
  6. Mazda 01-020-18: CX-5 P0524 with oil pressure warning, PCM software — Mazda / NHTSA ,
  7. Mazda 01-004-21: P0524/P055F, oil solenoid valve stuck by oil contamination — Mazda / NHTSA ,
  8. Mazda SA-048-26: Mazda3 P0524, oil pressure control valve with machining debris — Mazda / NHTSA ,
  9. Ford SSM 46526: F-150 3.5L/5.0L low or no oil pressure reading, liquid in sensor connector — Ford Motor Company / NHTSA ,
  10. Ford SSM 51764: 2020-2023 Explorer/Aviator 3.0L P0521/P0524, internal oil pressure leak — Ford Motor Company / NHTSA ,
  11. Ford TSB 19-2243: 2.7L/3.0L EcoBoost oil consumption with P0524 and/or P06DD — Ford Motor Company / NHTSA ,
  12. NHTSA complaint ODI 11747042: 2022 Ford Bronco 2.7L, P0524 and P06DD with speed limited — NHTSA Office of Defects Investigation (complaint flat file) ,
  13. Ford SSM 49744: 2020-2021 Escape / 2021 Bronco Sport 1.5L low oil pressure warning with P0524 — Ford Motor Company / NHTSA ,
Last reviewed
Written by
Saurabh K.
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