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P0523 on CHEVROLET IMPALA

Engine Oil Pressure Sensor/Switch A High

NHTSA Reports
2
Severity
Medium
Most Affected
2010, 2011
Crashes / Fires
0 / 0
Source: NHTSA Complaints Database · SAE J2012
Last reviewed: Last updated:

Methodology: We combine code standards with complaint and reliability patterns, then review for clear, vehicle-first diagnosis steps.

Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

What P0523 Means on Your CHEVROLET IMPALA

P0523 is a diagnostic trouble code indicating: Engine Oil Pressure Sensor/Switch A High. This code relates to the vehicle speed and idle control system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

2 CHEVROLET IMPALA owners have reported this issue to NHTSA across model years 2010-2011. Most reports come from the 2010, 2011 model years. The most commonly reported component is Electrical System,Electronic Stability Control (Esc),Engine (50.0% of reports).

Real CHEVROLET IMPALA Owner Reports

Source: NHTSA Complaints Database

"The diagnostic revealed that there are 11 codes in the vehicle system. these codes ranged from passkey system failures to evap codes to transmission. suspected failure of wiring harness altogether with possible bcm/cam failure as well."

— 2010 CHEVROLET IMPALA owner · ELECTRICAL SYSTEM,ELECTRONIC STABILITY CONTROL (ESC),ENGINE · Filed 07/22/2020

"This problem has happened for many many years. Made appointments @ Fuccillo Chevy dealer, by then it’s gone off & they don’t know! Well, just occurred again when getting new tires @Dunn pulling in."

— 2011 CHEVROLET IMPALA owner · ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM · Filed 11/10/2023

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

1
'10
1
'11

Common Causes on CHEVROLET IMPALA

Based on NHTSA complaint component analysis for this vehicle.

ELECTRICAL SYSTEM,ELECTRONIC STABILITY CONTROL (ESC),ENGINE 50%
ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM 50%

What To Do Next

  1. 1
    Check for recalls on YOUR VIN

    Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.

  2. 2
    Get a proper diagnosis

    A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.

  3. 3
    Compare repair quotes

    Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does P0523 mean on a CHEVROLET IMPALA? ▾
P0523 indicates: Engine Oil Pressure Sensor/Switch A High. This is a vehicle speed and idle control code. 2 CHEVROLET IMPALA owners have reported this to NHTSA.
What are the most common causes of P0523 on CHEVROLET IMPALA? ▾
Based on 2 NHTSA reports, the most commonly cited components are: Electrical System,Electronic Stability Control (Esc),Engine, Electrical System,Engine,Fuel/Propulsion System. These percentages are based on the component field in owner complaints.
Is P0523 serious on my CHEVROLET IMPALA? ▾
Of 2 NHTSA reports for this code on CHEVROLET IMPALA, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.
What should I do if my CHEVROLET IMPALA shows P0523? ▾
1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.

P0523 on Other Vehicles

→ All codes reported on CHEVROLET IMPALA