Complete diagnostic information for error code P0108
Manufacturer-Specific Variations
This code (P0108) 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.
P0108
Powertrain CodeMAP or BARO Sensor Signal too High
Description
Manifold Absolute Pressure (MAP) (G71) or Barometric Pressure (BARO) (F96), Signal too High
Common Symptoms
- Check Engine Light
- Poor engine performance, especially under load
- Possible lean fuel mixture condition
- High altitude compensation system issues
- Incorrect boost pressure readings (forced induction)
Possible Causes
- Failed MAP or BARO sensor
- Short to power in sensor signal circuit
- Open circuit or high resistance in sensor wiring
- Sensor calibration error
- ECU signal processing fault
Diagnosis Steps
- Check MAP/BARO sensor signal voltage
- Test for shorts to power in sensor circuit
- Measure sensor resistance and circuit continuity
- Check for open circuits or high resistance
- Verify ECU signal processing
Repair Solutions
- Replace faulty MAP or BARO sensor
- Repair shorted sensor signal wiring to power
- Repair open circuits or high resistance issues
- Update ECU software if signal processing faulty
- Reset pressure sensor adaptations
Prevention Tips
- Protect sensor wiring from damage
- Regular circuit continuity checks
- Address electrical issues promptly
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