P2682 on 2020-2023 Subaru Outback — Engine Coolant Bypass Valve "A" Control Circuit Low
1 vehicles · 1 makes · $900-$1,800 repair
Most Reported On
P2682 is an OBD-II diagnostic trouble code meaning “Engine Coolant Bypass Valve "A" Control Circuit Low.” This code is set when the engine control module detects low voltage on the control circuit for engine coolant bypass valve "A". This electronically controlled valve directs coolant flow to speed engine warm-up and supply heat to the heater core. A circuit fault can leave the valve in the wrong position, affecting warm-up time, heater output, and potentially engine temperature regulation. It usually points to an electrical problem in the valve or its wiring rather than the cooling system itself. This code is most commonly reported on 2020-2023 Subaru Outback, with repair costs ranging from $900 to $1,800.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P2682, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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FAQ
What does P2682 mean?
P2682 stands for "Engine Coolant Bypass Valve "A" Control Circuit Low." This code is set when the engine control module detects low voltage on the control circuit for engine coolant bypass valve "A". This electronically controlled valve directs coolant flow to speed engine warm-up and supply heat to the heater core. A circuit fault can leave the valve in the wrong position, affecting warm-up time, heater output, and potentially engine temperature regulation. It usually points to an electrical problem in the valve or its wiring rather than the cooling system itself.
What are the most common causes of P2682?
The most common causes of P2682 are: Faulty coolant bypass valve solenoid (internal short), Corroded, shorted, or open wiring/connectors, Poor electrical connection at the valve, Coolant contamination of the connector, Failed driver circuit inside the PCM/ECM, Damaged wiring harness. The specific cause varies by vehicle.
How much does it cost to fix P2682?
Repair costs for P2682 range from $900 to $1,800, depending on the vehicle and root cause.
Which vehicles are affected by P2682?
Au7o has documented P2682 across 1 vehicle models from 1 manufacturers: Subaru.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.