Barometric Pressure Circuit Malfunction

FAULT ID
P0105

TITLE
Barometric Pressure Circuit Malfunction

BACKGROUND
- The barometric pressure sensor outputs a voltage which corresponds to the barometric pressure.
- The engine control module checks whether this voltage is within a specified range.

RANGE OF CHECK
- Ignition switch: ON
- Excluding 60 seconds after the ignition switch is turned to ON or immediately after the engine starts.
- Battery voltage is 8 V or more.

SET CONDITIONS
- Sensor output voltage is 4.5 V or more (corresponding to a barometric pressure of 114 kPa (33.7 in.Hg) or more) for 4 seconds.

or

- Sensor output voltage is 0.2 V or less (corresponding to a barometric pressure of 5.33 kPa (1.57 in.Hg) or less) for 4 seconds.

EFFECT
Limp-in
- Controls as if the barometric pressure 101 kPa (760 mmHg) (sea level).

PROBABLE CAUSES
- Barometric pressure sensor failed.
- Open or shorted barometric pressure sensor circuit, or loose connector.
- Engine control module failed.