What is CID 156:
CID 156 refers to a problem with the vehicle's air intake system. The ECM detects that the mass air flow (MAF) sensor is malfunctioning, leading to incorrect air-fuel mixture, poor engine performance, and reduced fuel efficiency.
Why This Happens:
- Faulty mass air flow (MAF) sensor.
- Shorted or damaged wiring in the MAF 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 sensor for damage or malfunction.
- Test the sensor’s voltage and resistance to ensure it’s operating correctly.
- Check wiring and connectors for visible damage or corrosion.
- Replace the faulty sensor if necessary.
- Inspect the air intake system for any blockages or contamination.
How to Avoid It Before It Happens:
- Regularly inspect the MAF sensor and wiring.
- Keep connectors clean and free from corrosion.
- Perform diagnostic checks to monitor sensor health.
- Ensure the air intake system is free from contamination.
- Clue’s equipment maintenance services track air intake systems and prevent sensor issues before they affect engine performance.
