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P2681 on TOYOTA COROLLA

Severity
Medium
NHTSA Reports
5
Most Affected
2020, 2021

What P2681 Means on Your TOYOTA COROLLA

Real TOYOTA COROLLA Owner Reports (Source: NHTSA Complaints Database)

"Coolant bypass valve. Code is P2681, part will fail and vehicle will consistently display a Engine Maintenance Required Visit Your Dealer on the MID. Dealerships will try and charge 500+ to repair it when the part is under 100+. Problem started to appear since end of March."

— 2020 TOYOTA COROLLA owner • UNKNOWN OR OTHER • Filed 03/30/2025

"I keep getting a warning sign on my dashboard stating that "Engine maintenance required. Call your dealership". After scanning for codes, I get the code P2681, or that the Engine coolant bypass valve is faulty. After looking online it appears that this is a common issue with this car model."

— 2020 TOYOTA COROLLA owner • ENGINE • Filed 06/01/2024

"Around 40k miles I received an Engine Maintenance Required warning. After some research Engine Maintenance and Engine Service Required are two very different indicators."

— 2020 TOYOTA COROLLA owner • ELECTRICAL SYSTEM,UNKNOWN OR OTHER,ENGINE • Filed 09/06/2023

"Engine code P2681(15) which after lookup is the coolant bypass valve which is a common faulty part that Toyota seems to not care about and charge upwards of 700$ at the dealer to fix."

— 2021 TOYOTA COROLLA owner • ENGINE • Filed 07/31/2024

"Engine coolant bypass valve short to battery. Throwing code - P2681-15 at 33,000 miles."

— 2021 TOYOTA COROLLA owner • ENGINE • Filed 05/21/2024

Data from NHTSA Vehicle Complaints Database. All reports are filed by vehicle owners directly with the U.S. Department of Transportation.

Common Causes of P2681 on TOYOTA COROLLA

60%
20%
20%

Percentages based on NHTSA complaint component analysis for this vehicle.

Complaint Trend by Year

2020
3
2021
2

What To Do Next

  1. 1
    Check for recalls on YOUR VIN

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if your vehicle is covered.

  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.

P2681 on Other Vehicles

Data sourced from the National Highway Traffic Safety Administration (U.S. Department of Transportation) and the SAE J2012 OBD-II standard. Code definitions follow the SAE J2012 / ISO 15031-6 standard. Owner reports are filed directly with NHTSA by vehicle owners. This information is provided for educational purposes only and should not replace professional automotive diagnosis. Always consult a qualified mechanic for vehicle repair decisions.

Last updated: March 2026