P0105moderate severityPowertrain
Manifold Absolute Pressure/BARO Circuit
on 2005 Toyota 4Runner 4.0L V6 · RWD
What this code means
General malfunction in the MAP or barometric pressure sensor circuit.
Symptoms
- Check Engine Light
- Poor acceleration
- Rough idle
- Black smoke
- Stalling
Common causes
- Faulty MAP sensor
- Vacuum hose disconnected or cracked
- Wiring issue
- PCM failure
Diagnostic steps
- Check MAP sensor vacuum hose
- Test MAP sensor voltage at key-on (should read barometric)
- Compare MAP to BARO reading
- Inspect wiring
Repair notes
Replace MAP sensor or repair vacuum connection.
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