P0108: Manifold Absolute Pressure/Barometric Pressure Circuit High Input
Short answer: P0108 means “Manifold Absolute Pressure/Barometric Pressure Circuit High Input”. It is a standard OBD-II code, so the basic meaning is the same on every car. Below is what it means on each of the 6 cars we cover, with a link to the full page for each car.
Standard OBD-II code Same meaning on all cars (SAE J2012).
P0108 on each car
| Car | Meaning on this car | Confidence |
|---|---|---|
| Toyota Passo (1st gen) | MAP / Barometric Pressure Circuit High Input | low |
| Toyota Corolla (11th gen, E170) | Manifold Absolute Pressure/Barometric Pressure Circuit High Input | medium |
| Toyota Corolla (10th gen, E140) | Manifold Absolute Pressure/Barometric Pressure Circuit High Input | medium |
| Honda City (5th gen, GM2) | Manifold Absolute Pressure/Barometric Pressure Circuit High Input | medium |
| Honda Civic (10th gen, FC) | Manifold Absolute Pressure/Barometric Pressure Circuit High Input | medium |
| Suzuki Wagon R (Pakistan, K10B) | Manifold Absolute Pressure/Barometric Pressure Circuit High Input | medium |
Symptoms
- Check engine light on
- Engine may run poorly
- Engine may not run at all
- Presence of black smoke at exhaust
Likely causes
- Potential causes of a P0108 code
- Bad
- MAP sensor
- Leak in vacuum supply line to MAP sensor
- Engine vacuum leak
- Short on signal wire to PCM
- Short on reference voltage wire from PCM
What to check, in order
- Read the code and freeze-frame data with an OBD-II scanner
- Check the connector and wiring of the part named in the code
- Test the part with scanner live data or a multimeter, using the values in the repair manual
- Fix the cause, clear the code and test-drive
Causes and checks above are the general meaning. The exact test steps and values differ by car: open your car’s page.