P2681 on TOYOTA RAV4
Engine Coolant Bypass Valve A Control Circuit/Open
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Toyota Rav4 context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P2681.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
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 P2681 Means on Your TOYOTA RAV4
P2681 is a diagnostic trouble code indicating: Engine Coolant Bypass Valve A Control Circuit/Open. This code relates to the fuel, air, emissions, or auxiliary powertrain control system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Real TOYOTA RAV4 Owner Reports
Source: NHTSA Complaints Database
"Scan Report done ! odometer 25266.Engine coolant bypass valve "A" control circuit failed test. Engine Control Module Code P2681-15."
"Check engine light came on. Ran codes in vehicle and showed code P2681-15 engine coolant bypass valve needs replaced."
"I got a check engine light p2681 for coolant bypass valve open. I have a scanner and I work for Lithia Dodge of Billings, MT. Upon some research online, many more people all have the same part going bad because of the same defective part going bad."
"my 2019 Rav4 has a message "to visit the dealer" vehicle needs maintance. i believe code #P2681. The coolant bypass valve. the dealer told me that the coolant bypass valve needs to be replaced. Also through my research this is a know issue with certain Toyota vehicles including the Rav 4."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on TOYOTA RAV4
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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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.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.