P0108
MAP/BARO Pressure Circuit High Input
2003-2003 Mazda B2300 2.3L I4
Moderate SeverityPowertrainGeneric (SAE)
The 2003 Mazda B2300 is equipped with a 2.3L inline-4 engine. Below you'll find detailed p0108 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The MAP sensor signal voltage is above the maximum expected value.
Symptoms
- Check Engine Light
- Lean running
- Poor acceleration
- Surge
Common Causes
- Open circuit in MAP signal wire
- Faulty MAP sensor
- Short to voltage
Diagnostic Steps
- Test MAP voltage
- Check for open circuits
- Test sensor reference voltage
Repair Notes
Repair wiring or replace MAP sensor.
Related Codes
Other Powertrain Codes
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- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0108 on Other Vehicles
Common Questions
What does code P0108 mean on a 2003-2003 Mazda B2300?
P0108 stands for "MAP/BARO Pressure Circuit High Input". The MAP sensor signal voltage is above the maximum expected value.
What are the symptoms of P0108 on a Mazda B2300?
Common symptoms of P0108 include: Check Engine Light, Lean running, Poor acceleration, Surge.
What causes P0108 on a 2003-2003 Mazda B2300?
Common causes of P0108 include: Open circuit in MAP signal wire, Faulty MAP sensor, Short to voltage.
Last updated: March 2026