Trouble codes › P0106

P0106 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance

Fuel and air

P0106 means the manifold pressure (MAP) sensor's reading doesn't fit how the engine is running, often a vacuum leak or a bad sensor hose.

The MAP sensor measures vacuum (pressure) in the intake manifold. The engine computer compares its reading with what it expects from throttle position, engine speed and the barometric reading, and P0106 means the MAP reading doesn't fit.

Can I keep driving? Yes, but get it fixed soon.

Usually drivable, but the engine may run poorly or use more fuel. Get it checked soon.

Common causes

  1. A cracked, disconnected or clogged vacuum hose to the MAP sensor
  2. A vacuum leak in the intake
  3. A failing MAP sensor
  4. Wiring or connector problems
  5. Low engine vacuum from a mechanical problem (less common)

Symptoms

  • Rough idle or hesitation
  • Poor fuel economy
  • Sometimes black smoke or hard starting

What to check first

  1. If the MAP sensor uses a vacuum hose, check it for cracks or blockage.
  2. Compare the MAP reading with key on, engine off against the actual barometric pressure (around 29-30 inHg or 100 kPa near sea level).
  3. Watch MAP at idle: a normal warm engine pulls strong vacuum (low kPa).
  4. Check the connector and wiring, then replace the sensor if readings are off.

What does P0106 mean on your vehicle?

The likely cause depends on your engine. iRepair researches your exact year, make, model and engine (service bulletins, recalls and owner reports) and tells you what to check first. Your first 3 questions are free.

Ask iRepair about P0106

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Related codes

General guidance for P0106 on most vehicles. Some makers use the same code a little differently; confirm in the service information for your vehicle, put safety first, and see a professional when in doubt.