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
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Repair guides, symptom pages, and wiring diagrams related to P0106.
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
Written by AllOEMManuals Editorial Team. Reviewed by ASE-certified technicians and updated with factory-reference checks for fitment-sensitive steps.
This guide was drafted with AI assistance and reviewed for accuracy by a human editor.
Last updated: 2026-05-07