What is CID 171:
CID 171 refers to a problem with the vehicle's air intake system, specifically with the mass air flow (MAF) sensor. The ECM detects that the sensor is malfunctioning or providing incorrect data, leading to improper air-fuel mixture and engine performance issues.
Why This Happens:
- Faulty mass air flow (MAF) sensor.
- Shorted or damaged wiring in the sensor circuit.
- Loose or corroded connectors.
- Blockages in the air intake system.
- ECM misinterpretation of sensor data.
How to Fix It:
- Inspect the mass air flow (MAF) sensor for damage or malfunction.
- Test the sensor’s voltage and resistance to ensure proper operation.
- Check wiring and connectors for visible damage or corrosion.
- Replace the faulty sensor if necessary.
- Inspect the air intake system for blockages or contamination.
How to Avoid It Before It Happens:
- Regularly inspect the MAF sensor and wiring.
- Perform routine air intake system maintenance.
- Keep connectors clean and free from corrosion.
- Perform diagnostic checks to monitor sensor performance.
- Clue’s equipment maintenance services help monitor air intake systems and prevent sensor issues before they affect engine performance.
