What are the symptoms of P0108?

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)

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

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

Do OBD-II codes differ between vehicle manufacturers?

Yes, while P-codes (powertrain) follow SAE J2012 standards, manufacturers may implement additional parameters or variations. U-codes (network communication) are particularly manufacturer-specific and can have different meanings for different brands.

Should I always check my vehicle's service manual?

Absolutely. Your vehicle's official service manual provides manufacturer-specific interpretations, diagnostic procedures, and repair instructions tailored to your exact model. Generic OBD-II code databases provide general guidance, but factory documentation ensures accurate diagnosis.

P0108: MAP or BARO Sensor Signal too High

Complete diagnostic information, symptoms, and potential causes

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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 Code

MAP or BARO Sensor Signal too High

Air Intake SystemMODERATE👁 Views: 46

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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