TorqueMech OBD Code Guide
P0108 - MAP/BARO High Input
MAP signal high/open.
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Common Next Steps
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Inspect ignition coils
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Check spark plugs
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Verify injector operation
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Code Overview
MAP signal high/open.
Common Causes
- Open circuit in the MAP signal or ground path
- Failed MAP sensor reading too high
- Vacuum hose off or port unplugged on older systems
- Poor connector fit or corrosion at the sensor
Symptoms
- Hard starting or rich-running behavior
- Idle quality problems
- Poor throttle response or reduced fuel economy
Diagnostic Steps
- Inspect the MAP connector, wiring, and vacuum source if the system uses one
- Verify reference voltage, ground, and signal integrity at the sensor
- Compare MAP data to key-on barometric pressure and live engine load
- Check for an unplugged hose or port before replacing the sensor
Repair Difficulty
Easy
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Next Steps
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