P0106
Medium SeverityMAP/BARO Sensor Circuit Range/Performance
Fuel System
P0106 — Instant Answer
MAP/BARO Sensor Circuit Range/Performance
Severity: MEDIUM SEVERITY
Meaning: The MAP (Manifold Absolute Pressure) sensor is reading outside normal range. Affects fuel delivery and ignition timing calculations.
Safe to drive? Usually yes with caution, but confirm root cause before long trips.
Estimated repair cost: $20 - $80
Most common causes:
- 1. Vacuum leak (35-45% of cases)
- 2. Faulty MAP sensor (10-25% of cases)
- 3. Clogged MAP sensor port (10-25% of cases)
- 4. Wiring issue (5-10% of cases)
Common Causes
How to Diagnose P0106
- 1Check vacuum hose to MAP sensor
- 2Clean MAP sensor port
- 3Test MAP sensor output with scan tool
- 4Check for vacuum leaks
OEM Diagnostic Flowchart
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Parts & Tools for This Job
Common parts shoppers buy for P0106 MAP/BARO Sensor Circuit Range/Performance.
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
Read codes and freeze-frame data before you guess at the fault.
Most diagnostic jobs start with a scan tool and a verified code path.
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 P0106.
OEM Manual Evidence
Browse →Diagnostic Trouble Codes (DTC) Index — 2013 Audi A3 Premium, 2.0L Eng VIN E, Automatic DCT Trans Service Manual ~ LEMON Manuals LEMON Manua...
Diagnostic Trouble Codes (DTC) Index — 2013 Audi A3 Premium, 2.0L Eng VIN E, Automatic DCT Trans Service Manual ~ LEMON Manuals LEMON Manua...
Diagnostic Trouble Codes (DTC) Index — 2013 Audi A3 Premium, 2.0L Eng VIN E, Standard Trans Service Manual ~ LEMON Manuals LEMON Manuals: R...
Diagnostic Trouble Codes (DTC) Index — 2013 Audi A3 Premium, 2.0L Eng VIN E, Standard Trans Service Manual ~ LEMON Manuals LEMON Manuals: R...
Related Symptoms
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Related Codes
MAP sensor voltage is below the expected minimum. The ECM sees this as extremely high vacuum, causing incorrect fuel calculations.
MAP sensor voltage is higher than maximum expected range. The ECM reads this as very low vacuum.
The engine is running lean on bank 1 — too much air or not enough fuel. The ECM has maxed out its fuel trim trying to compensate. Common causes include vacuum leaks and dirty MAF sensors.
Frequently Asked Questions
- What is a MAP sensor?
- The MAP sensor measures intake manifold vacuum to help the ECM calculate fuel injection and ignition timing.
- Can I clean a MAP sensor?
- Yes, you can clean the sensor port with electronics cleaner. A clogged port is a common cause of P0106.
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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