P0107 - MAP/BARO Low Input

MAP signal low.

Code Overview

MAP signal low.

Common Causes

• Short to ground in the MAP signal circuit
• Failed MAP sensor reading too low
• Low reference voltage or poor ground at the sensor
• Blocked sensor port on systems that use a MAP hose or port

Symptoms

• Hesitation or weak acceleration
• Poor idle quality
• Reduced power or poor fuel economy

Diagnostic Steps

1. Inspect the MAP connector and harness for rubbed-through or grounded wiring
2. Verify reference voltage and ground at the sensor
3. Compare MAP data to key-on barometric pressure and engine load
4. Inspect the sensor port or hose for blockage if equipped

Repair Difficulty

Easy

General difficulty estimate for the most common repair path.

Likely Repairs & Cost Guides

Use test results to confirm the fault before pricing the repair.

Related OBD Codes

Browse the closest code-family pages when the same fault pattern often shows up nearby.

Next Steps

Move from the code to a diagnosis path, then into repair pricing once the fault is confirmed.