Air Cleaner Inlet Control Circuit Low
The P2676 code indicates that the powertrain control module (PCM) has detected a low voltage condition in the air cleaner inlet control circuit. This circuit controls a flap or valve that regulates the amount of air entering the air cleaner, often for cold air intake or sound enhancement. A low voltage signal suggests a short to ground, open circuit, or faulty actuator, which can affect engine performance and emissions.
01. Most Common Causes
- Faulty air cleaner inlet control actuator
- Short to ground in the control circuit wiring
- Open circuit or poor connection in the harness
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine performance or hesitation
- Abnormal intake noise or lack of expected sound
- Possible reduced fuel economy
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm P2676 and check for related codes.
Step 2: Visually inspect the air cleaner inlet control actuator and wiring for damage or corrosion.
Step 3: Test the actuator circuit voltage with a multimeter; compare to manufacturer specs.
Step 4: Check continuity and resistance in the circuit; repair or replace as needed.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is generally safe for short trips, but reduced performance and potential emissions issues may occur. Have it diagnosed soon.
How much does it cost to fix?▼
Typical repair costs range from $50 to $150, including parts and labor, depending on the cause.