Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA20113 MAZDASPEED, 2.3 3REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 629 (ENGINE CONTROL SYSTEM)BAROMETRIC PRESSURE (BARO) SENSOR INSPECTION
2011 Mazda 3 Mazdaspeed, 2.3 3
Barometric Pressure (BARO) Sensor Inspection
2011 Mazda 3 Mazdaspeed, 2.3 3SECTION Barometric Pressure (BARO) Sensor Inspection
WARNING: This page is about a different car, the 2011 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- Before performing the following inspection, make sure to follow the troubleshooting flowchart. (Refer to the FOREWORD [13B-MSP] in the appropriate Symptom Troubleshooting - Engine article .)
- Connect the M-MDS to the DLC-2.
- Turn the ignition switch to the ON position.
- Select BARO on the M-MDS.
- Verify that the BARO PID voltage is within the specification.
- If not as verified, replace the PCM. (See PCM REMOVAL/INSTALLATION .)
BARO Sensor Output Voltage 2.44-3.80 V
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.