P0106: Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance

P0106 means the MAP (Manifold Absolute Pressure) sensor is sending readings outside the expected range for current engine operating conditions. The ECU uses MAP sensor data to calculate air density and determine fuel delivery, so incorrect readings directly cause poor engine performance and reduced efficiency.

P0106 is a emissions-related diagnostic trouble code classified as moderate severity. When your vehicle's ECU detects this condition, it stores P0106 and illuminates the check engine light.

If your vehicle has triggered P0106, you may notice one or more of these symptoms:

• Check engine light on
• Rough idle or stalling
• Poor acceleration and hesitation
• Increased fuel consumption
• Black smoke from exhaust (running rich)
• Engine surging at steady speeds

Here are the most common causes of P0106, ranked by how likely they are to be the culprit:

Generally yes, for short-term driving. You can drive to a workshop, but expect rough running, poor fuel economy, and possible stalling. The ECU may enter a safe mode using default values.

Follow these steps to pinpoint the root cause of P0106:

1. With the engine off and ignition on, read the MAP sensor value with a scan tool. At sea level, it should read approximately 100 kPa (atmospheric pressure). A significantly different reading suggests a faulty sensor
2. Start the engine and observe MAP readings at idle. Typical idle readings are 25-45 kPa. If the reading stays near 100 kPa, check for a disconnected or cracked vacuum hose
3. Inspect the vacuum hose from the intake manifold to the MAP sensor. Look for cracks, kinks, or disconnections. Replace if damaged
4. Remove the MAP sensor and inspect the sensing port for carbon buildup. Clean with electrical contact cleaner if needed
5. Check the MAP sensor wiring and connector for corrosion, moisture, or damage. Repair any wiring issues found
6. If the sensor, hose, and wiring are all good, perform a smoke test to check for vacuum leaks elsewhere in the intake system

Repair costs for P0106 vary depending on the root cause and your vehicle. Here are typical estimates:

P0106 behaves differently depending on your vehicle. Select your car below for model-specific causes, known issues, and adjusted cost estimates:

These codes are often seen alongside P0106 or indicate related issues: