MAP/MAF - Throttle Position Correlation

Check these first

• A dirty or failing MAF sensor under-reporting airflow
• A dirty or failing MAP sensor giving low vacuum readings
• A dirty or worn throttle position sensor
• A vacuum leak between the throttle body and the intake
• Carbon buildup on the throttle body or intake

What to do next

1. Compare MAF, MAP, and throttle position readings on a scan tool
2. Inspect for vacuum leaks at the intake and throttle body
3. Clean the MAF sensor and the throttle body
4. Test the throttle position sensor sweep for dead spots
5. Replace the sensor that reads out of line with the others
6. Clear the code and retest

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