P0107: MAP or BARO Sensor Signal too Low
Complete diagnostic information, symptoms, and potential causes
Manufacturer-Specific Variations
This code (P0107) 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.
MAP or BARO Sensor Signal too Low
Description
Manifold Absolute Pressure (MAP) (G71) or Barometric Pressure (BARO) (F96), Signal too Low
Common Symptoms
- Check Engine Light
- Poor engine performance, especially at idle
- Possible rich fuel mixture condition
- Rough idle or engine stalling
- Incorrect altitude reading affecting performance
Possible Causes
- Failed MAP or BARO sensor
- Short to ground in sensor signal circuit
- Vacuum leak (MAP sensor specific)
- Clogged or restricted vacuum line
- ECU reference voltage issue
Diagnosis Steps
- Check MAP/BARO sensor signal voltage
- Test for shorts to ground in sensor circuit
- Inspect vacuum lines for leaks or restrictions (MAP)
- Check sensor vacuum connection (MAP)
- Test ECU reference voltage to sensor
Repair Solutions
- Replace faulty MAP or BARO sensor
- Repair shorted sensor signal wiring
- Repair vacuum leaks in intake system
- Clear clogged vacuum lines
- Repair ECU reference voltage circuit
Prevention Tips
- Regular vacuum system maintenance
- Protect sensor wiring from damage
- Address electrical shorts immediately
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