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DTC codes / P26xx · Computer and output circuits / P2682

P2682Engine Coolant Bypass Valve A Control Circuit Low

P2682 means the powertrain control module (PCM) has detected a low-voltage condition on the control circuit for the engine coolant bypass valve, which is the valve that routes coolant around the radiator to speed warm-up. The PCM commands the valve to move and monitors the circuit, and a low reading tells it the circuit is shorted to ground or the valve's internal coil has failed.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
AreaComputer and output circuits

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

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