P0106 — MAP/Barometric Pressure Sensor Range/Performance
P0106 means the manifold absolute pressure sensor reading doesn't line up with engine load and throttle position. Common causes are a vacuum leak, a clogged MAP port, or a failing sensor.
Cost range: $50–$350. Severity: medium. Safe to drive? Yes for short trips, but fuel trims will be off and the engine may run rough.
Most common causes of P0106
- Vacuum leak — Cracked hoses or a leaking intake gasket skew manifold pressure. ($50–$250)
- Clogged MAP sensor port or hose — Carbon blocks the passage so the sensor never sees real manifold pressure. ($0–$50)
- Failed MAP sensor — Confirm with live data before replacing. ($80–$250)
- Restricted exhaust — A plugged catalytic converter raises manifold pressure at load. ($500–$2,000)
Symptoms drivers report with P0106
- Rough idle
- Black smoke
- Poor acceleration
- Hard starting