What does P0106 mean?

The MAP sensor value does not fit with the other engine data, so the ECU doubts its reading.

How do I check a MAP sensor reading?

With ignition on and engine off, it should read close to the local barometric pressure; at idle it drops to a low value.

Fuel and air metering

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

The MAP sensor reading is not plausible compared with other signals such as throttle position, engine speed or barometric pressure. The ECU cannot judge engine load correctly.

Severity: Medium

Common causes

Vacuum leak or cracked intake hose
Clogged or leaking vacuum line to the MAP sensor
Faulty MAP sensor
Restricted exhaust or clogged catalytic converter
EGR valve stuck open

Symptoms

Rough idle
Hesitation and weak power
Poor fuel economy
Check engine light

How to check

Inspect the vacuum hose to the MAP sensor and all intake connections
Compare MAP reading with key on engine off (should equal barometric pressure)
Check the idle vacuum and look for exhaust restriction
Test or replace the sensor if the values stay implausible

Can you keep driving?

Usually drivable but with poor performance. Repair it soon to avoid fuel waste and stalling.

Frequently asked questions

What does P0106 mean?: The MAP sensor value does not fit with the other engine data, so the ECU doubts its reading.
How do I check a MAP sensor reading?: With ignition on and engine off, it should read close to the local barometric pressure; at idle it drops to a low value.

General reference information. It does not replace a diagnosis on your own vehicle. The same code can have different causes depending on make, model year and engine; check the manufacturer's documentation or ask a technician with a scan tool.