What does code P2677 mean?

Q: What does code P2677 mean?

Air Cleaner Inlet Control Circuit High. P2677 indicates that the powertrain control module (PCM) has detected an abnormally high voltage on the air cleaner inlet control circuit, which typically commands a valve or shutter that regulates intake air flow. The circuit is expected to operate within a specific voltage range, and a high reading means the PCM sees a short to voltage, an open return path, or a faulty actuator.

DTC codes / P26xx · Computer and output circuits / P2677

P2677Air Cleaner Inlet Control Circuit High

P2677 indicates that the powertrain control module (PCM) has detected an abnormally high voltage on the air cleaner inlet control circuit, which typically commands a valve or shutter that regulates intake air flow. The circuit is expected to operate within a specific voltage range, and a high reading means the PCM sees a short to voltage, an open return path, or a faulty actuator.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

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.