DTC Advanced Diagnostics: P0107, P0108
DTC P0107:Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage
DTC P0108:Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage

General Description


The manifold absolute pressure (MAP) sensor measures the pressure or vacuum in the manifold. This measurement is converted into an electrical signal which the powertrain control module (PCM) uses to monitor the engine. The MAP sensor outputs low signal voltage at high vacuum (throttle valve closed) and high signal voltage at low vacuum (throttle valve wide open). If the signal voltage from the MAP sensor falls below or exceeds a set value for a specified time, the PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type
Execution
Continuous
Sequence
None
Duration
2 seconds or more
DTC Type
One drive cycle, MIL on

Enable Conditions
Condition
 
Vehicle
ON mode

Malfunction Threshold
DTC: P0107

The MAP sensor output voltage [MAP SENSOR] is 0.23 V or less for at least 2 seconds.

DTC: P0108

The MAP sensor output voltage [MAP SENSOR] is 4.49 V or more for at least 2 seconds.

[ ]: HDS Parameter

Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
DTC: P0107
MAP sensor PB line short to ground
MAP sensor VCC line open

DTC: P0108
MAP sensor PB line open
MAP sensor SG line open

Common
MAP sensor failure
PCM internal circuit failure

Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory.

Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the 12 volt battery.