P2682 on Subaru
Engine Coolant Bypass Valve "A" Control Circuit Low
P2682 on Subaru vehicles indicates engine coolant bypass valve "a" control circuit low. Au7o has documented this code across 1 Subaru model — most commonly on Outback. 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. Typical repair costs on Subaru range from $900 to $1,800, depending on the specific model and root cause.
Common Causes of P2682
- •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
P2682 on Subaru by Model
Subaru Outback(1 issue)
- Thermo Control Valve Failure Causing Check Engine Light and Overheating Risk2020-2023
Multiple 2020-2023 Outback owners with the 2.5L FB25 engine report failure of the thermo control valve assembly, which can trigger a check engine light, disable normal coolant flow control, and in some cases lead to overheating or poor heater performance. Subaru issued a warranty extension and service communications because the valve's internal position sensor/motor can fail. Owners commonly see the problem well before 100,000 miles, often with no prior cooling-system symptoms.
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What does P2682 mean on Subaru?▼
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. On Subaru specifically, this code is documented across 1 model.
What causes P2682 on Subaru vehicles?▼
Common causes on Subaru: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2682 on a Subaru?▼
Repair costs on Subaru range from $900 to $1,800, depending on the specific model and root cause.
Which Subaru models have P2682 documented?▼
Au7o has documented P2682 on 1 Subaru model: Outback.