Air Flow Restriction or Leak Between Air Filter and MAF Sensor
The P2280 code indicates that the Powertrain Control Module (PCM) has detected a restriction or leak in the intake air flow path between the air filter and the Mass Air Flow (MAF) sensor. This can be caused by a clogged air filter, debris in the intake duct, a loose or damaged air intake hose, or a faulty MAF sensor. The PCM monitors the MAF sensor output and compares it to expected values; if the airflow is lower than expected, it sets this code. This condition can lead to reduced engine performance, poor fuel economy, and potential damage to the MAF sensor.
01. Most Common Causes
- Clogged or dirty air filter
- Obstruction in the intake duct (e.g., debris, foreign object)
- Loose, cracked, or disconnected air intake hose
- Faulty or contaminated MAF sensor
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or hesitation during acceleration
- Poor fuel economy
- Rough idle or stalling
03. Step-by-Step Diagnosis
Step 1: Visually inspect the air filter and replace if dirty or clogged.
Step 2: Check the entire intake duct from air filter to MAF sensor for obstructions, cracks, or loose connections.
Step 3: Inspect the MAF sensor for contamination or damage; clean with MAF cleaner if dirty.
Step 4: Use a scan tool to monitor MAF sensor readings and compare to manufacturer specifications; replace sensor if readings are out of range.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is generally not recommended to drive with this code as it can cause reduced performance and may lead to further damage to the MAF sensor or engine. Have it diagnosed and repaired promptly.
How much does it cost to fix?▼
The cost to fix P2280 typically ranges from $50 to $150, depending on the cause. Replacing an air filter is inexpensive, while a new MAF sensor can cost $80-$150 plus labor.