OBD-II Error Code P0109: MAP Sensor Circuit Intermittent – How to Fix It

Q: What does error code P0109 mean?

P0109 stands for 'MAP Sensor Circuit Intermittent.' It means the engine control module (ECM) detects an intermittent signal from the MAP sensor, which can cause drivability issues.

Q: Can I drive with a P0109 code?

It's not recommended. Driving with this code can lead to poor fuel economy, rough idling, and potential stalling. Fix the issue promptly to avoid further damage.

Q: How much does it cost to fix P0109?

DIY cost is typically $30-$100 for a new MAP sensor. A mechanic might charge $100-$200 including labor.

Q: Is P0109 the same as P0107 or P0108?

No. P0107 indicates low circuit voltage, P0108 indicates high voltage, and P0109 indicates an intermittent signal. Causes and fixes may overlap.

Q: Can a vacuum leak cause P0109?

Yes, a vacuum leak can cause erratic MAP sensor readings and trigger P0109. Check for cracked hoses or gasket leaks before replacing the sensor.

Abstract

Error code P0109 indicates an intermittent signal from the Manifold Absolute Pressure (MAP) sensor. This can cause poor engine performance, rough idle, or stalling. The issue is often due to a loose connection, damaged wiring, or a failing MAP sensor.