HomeP0520 · Code meaning and manufacturer information
Powertrain

P0520

Code meaning and manufacturer information

P0520

What does this code mean?

The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.

A code identifies a detected condition, not a part that must automatically be replaced.

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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer wording

Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.

ToyotaP05202A
Engine Oil Pressure Sensor/Switch "A" Signal Stuck in Range

NHTSA 10206528

Manufacturer communications

2

Original wording in English

TSB010421

TOYOTA

Reported code forms P05202A

TSB: Some 2018 ? 2024 model year Toyota vehicles equipped with an A25A-FKS, A25A-FXS, M20A-FKS, or M20A-FXS engine may exhibit one or more of the following conditions: ?Milky/discolored engine oil. ?An ?Oil Pressure…

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T-SB-0104-21

TOYOTA

Reported code forms P05202A

TSB: Some 2018 ? 2022 model year Toyota vehicles equipped with an A25A-FKS, A25A-FXS, or M20A-FKS engine may exhibit one or more of the following conditions: ?Milky/Discolored engine oil. ?An ?Oil Pressure Low? warning…

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Check vehicle applicability

6

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

MakeModelModel year
ToyotaCOROLLA HATCHBACK2024
ToyotaCOROLLA HATCHBACK2023
ToyotaCOROLLA HATCHBACK2022
ToyotaCOROLLA HATCHBACK2021
ToyotaCOROLLA HATCHBACK2020
ToyotaCOROLLA HATCHBACK2019

Before replacing a part

Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.

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Can I keep driving?

A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.