P2677 Fault Code

Air Cleaner Inlet Control Circuit High

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2677 fault code indicates a problem with the Air Cleaner Inlet Control Circuit. This circuit plays a critical role in managing the airflow to the engine, ensuring optimal performance and efficiency. When the circuit operates at a high level, it can signify potential issues with sensors, actuators, or wiring that are involved in controlling the intake air cleaner system.

What are the symptoms of the P2677 code?

• Decreased engine performance due to improper air intake.
• Triggered check engine light on the dashboard.
• Possible increase in fuel consumption due to inefficient air-fuel mixture.
• Unusual engine sounds or irregular idling.

What causes the P2677 code?

• Faulty air cleaner inlet control valve.
• Damaged or shorted wiring in the circuit.
• Poor electrical connections affecting the circuit.
• Failed engine control module (ECM) that does not manage the circuit properly.

How to fix P2677?

• Inspect and repair any damaged wiring or connectors in the circuit.
• Test and, if needed, replace the air cleaner inlet control valve.
• Clear the fault code and perform a test drive to check if the issue reoccurs.
• If problems persist, consider evaluating the ECM for any faults.