DTC P0108: Manifold Absolute Pressure Circuit High Input

CIRCUIT OPERATION
• A 5-volt voltage is supplied to the manifold absolute pressure sensor power terminal (terminal No. 3) from ECM (terminal No. 81) <M/T> or PCM (terminal No. 46) <A/T>. The ground terminal (terminal No. 2) is grounded with ECM (terminal No. 92) <M/T> or PCM (terminal No. 57) <A/T>.
• A voltage that is proportional to the intake manifold pressure is sent to the ECM (terminal No. 73) <M/T> or PCM (terminal No. 91) <A/T> from the manifold absolute pressure sensor output terminal (terminal No. 1).
TECHNICAL DESCRIPTION
• The manifold absolute pressure sensor outputs a voltage which corresponds to the intake manifold pressure.
• The ECM <M/T> or PCM <A/T> checks whether this voltage is within a specified range.
DESCRIPTIONS OF MONITOR METHODS
Manifold absolute pressure sensor output voltage is out of specified range.
MONITOR EXECUTION
Continuous
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
• Not applicable

Sensor (The sensor below is determined to be normal)
• Engine coolant temperature sensor
• Throttle position sensor
• Volume airflow sensor
• Intake air temperature sensor
• Barometric pressure sensor
DTC SET CONDITIONS Logic Flow Chart


Check Condition
8 minutes or more have passed since the starting sequence was completed, when the engine coolant temperature at engine start is 0°C (32°F) or lower.

Judgement Criterion
• Manifold Absolute pressure is 117 kPa (34.6 in.Hg) or higher for 2 seconds.
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 19 .
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:
• Manifold Absolute pressure sensor failed.
• Open manifold absolute pressure sensor circuit, or connector damage.
• ECM failed. <M/T>
• PCM failed. <A/T>