P2675: Air Cleaner Inlet Control Circuit/Open
The P2675 code indicates a problem in the air cleaner inlet control circuit, which is part of the vehicle's intake system. This circuit controls a flap or valve that regulates the temperature of the air entering the engine by mixing hot and cold air. An open circuit means there is a break in the electrical path, preventing the valve from operating correctly. This can lead to improper air temperature entering the engine, affecting combustion and emissions.
01. Most Common Causes
- Faulty air cleaner inlet control actuator
- Open or shorted wiring in the control circuit
- Corroded or damaged electrical connector
- Failed engine control module (ECM)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine performance or hesitation
- Poor fuel economy
- Rough idle or stalling
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for other related codes.
Step 2: Visually inspect the air cleaner inlet control actuator and its wiring for damage, corrosion, or loose connections.
Step 3: Test the actuator's resistance and voltage supply using a multimeter; compare to manufacturer specifications.
Step 4: If wiring and actuator are okay, test the ECM output signal to the actuator; replace ECM if faulty.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is generally safe to drive short distances, but prolonged driving may cause reduced performance and increased emissions. It's best to diagnose and repair promptly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for parts and labor, depending on the cause. Replacing the actuator is common and affordable.