P0107
Medium SeverityMAP/BARO Sensor Circuit Low Input
Fuel System
P0107 — Instant Answer
MAP/BARO Sensor Circuit Low Input
Severity: MEDIUM SEVERITY
Meaning: MAP sensor voltage is below the expected minimum. The ECM sees this as extremely high vacuum, causing incorrect fuel calculations.
Safe to drive? Usually yes with caution, but confirm root cause before long trips.
Estimated repair cost: $20 - $80
Most common causes:
- 1. Faulty MAP sensor (35-45% of cases)
- 2. Short in sensor wiring (10-25% of cases)
- 3. Bad ground connection (10-25% of cases)
- 4. ECM issue (5-10% of cases)
Common Causes
How to Diagnose P0107
- 1Check sensor wiring and connector
- 2Measure MAP sensor output voltage
- 3Verify reference voltage (5V)
- 4Replace sensor if output stuck low
OEM Diagnostic Flowchart
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Parts & Tools for This Job
Common parts shoppers buy for P0107 MAP/BARO Sensor Circuit Low Input.
Oxygen Sensor
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Spark Plugs
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Ignition Coils
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Mass Air Flow Sensor
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Fuel Injectors
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Engine Oil
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OBD2 scanner
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Check SpecificationsBattery tester
Check cranking and charging health before replacing expensive parts.
A weak battery can mimic alternator or starter problems.
Check SpecificationsMultimeter kit
Confirm voltage, continuity, and sensor power with one simple kit.
A meter is the cheapest way to rule out a bad circuit fast.
Check SpecificationsRelated Resources
Repair guides, symptom pages, and wiring diagrams related to P0107.
OEM Manual Evidence
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Related Symptoms
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Related Codes
The MAP (Manifold Absolute Pressure) sensor is reading outside normal range. Affects fuel delivery and ignition timing calculations.
MAP sensor voltage is higher than maximum expected range. The ECM reads this as very low vacuum.
Frequently Asked Questions
- What does P0107 mean?
- P0107 means the MAP sensor voltage is too low. Usually a failed sensor or wiring problem.
- Is P0107 expensive to fix?
- No — MAP sensors cost $20-$80 and are usually easy to replace.
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Author & Review
Published by AllOEMManuals, founded by Lyndon Bedford, an automotive technician with 20 years of experience. He owned and operated a mechanic shop in Hurst, Texas from 2014 to 2022 and continues hands-on repair work.
Content may combine manual references, general repair templates, and AI-assisted drafting. Confirm the source, vehicle configuration, and applicability before working. Report corrections through our contact page.
Last updated: 2026-10-29