DTC codes / P26xx · Computer and output circuits / P2676
P2676 indicates that the powertrain control module (PCM) has detected a low voltage condition on the air cleaner inlet control circuit, which typically commands a flap or valve that regulates intake air temperature or flow. The circuit is expected to operate within a specific voltage range, and a low reading means the PCM sees voltage below the normal threshold, often due to a short to ground, a faulty actuator, or a wiring issue.
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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