Complete diagnostic information for error code P0105
Manufacturer-Specific Variations
This code (P0105) may have different meanings or additional parameters depending on your vehicle's make, model, and year. Always verify with your vehicle's service manual or a qualified technician before attempting repairs.
P0105
Powertrain CodeMAP or BARO Sensor Voltage Supply
Description
Manifold Absolute Pressure (MAP) (G71) or Barometric Pressure (BARO) (F96), Voltage supply
Common Symptoms
- Check Engine Light
- Poor engine performance, especially at altitude
- Rough idle or engine stalling
- Altitude compensation system inoperative
- Possible boost pressure measurement issues (turbo/supercharged engines)
Possible Causes
- Failed MAP or BARO sensor
- Open or short in sensor power circuit
- Blown sensor fuse
- Corroded electrical connectors
- ECU power supply issues to pressure sensors
Diagnosis Steps
- Check MAP/BARO sensor power supply voltage
- Test sensor ground circuit
- Inspect sensor fuse and related circuits
- Check wiring harness for damage or corrosion
- Test ECU power output to pressure sensors
Repair Solutions
- Replace faulty MAP or BARO sensor
- Repair open or shorted power wiring
- Replace blown sensor fuse
- Clean or replace corroded connectors
- Repair ECU power supply circuit if needed
Prevention Tips
- Regular pressure sensor inspections
- Protect electrical connectors from moisture
- Address electrical issues promptly
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