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.
DTC P0105: Map Sensor Circuit Range/Performance: Description
The ECM has internal tables that compare Manifold Absolute Pressure (MAP) sensor values with a calculated MAP table. The MAP sensor is a transducer that varies resistance according to changes in intake manifold pressure (vacuum). The voltage ranges from 1.0-1.5 volts at idle (low pressure/high vacuum) to 4.5-4.8 volts at wide open throttle (high pressure/low vacuum). The 2 Throttle Position (TP) sensors vary resistance according to changes in throttle plate position. The voltage ranges is from 2.94-3.34 volts at 33% throttle to 0.59 for TP1 and 1.86-4.39 volts for TP2. DTC P0105 sets when the values are out of the calibrated range from the table values.
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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.