Engine Error
P0109
Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent
Severity
Medium
Symptoms
Intermittent engine hesitation, stalling at stops, random MIL illumination
Common Causes
- Loose connection at the MAP sensor
- Frayed wiring shorting out randomly
- Internally failing MAP sensor
- Vacuum leak vibrating open and closed
How to Fix
- 1 Secure MAP sensor connector
- 2 Perform a wiggle test to locate wiring break
- 3 Replace MAP sensor
- 4 Inspect and secure all intake vacuum hoses
Estimated Repair Cost
USD
$50
–
$250
Wiring repair: 100; MAP sensor: 50 - 150