I removed the intake manifold to remove a bad oil pressure sensor and install the relocation kit from Total Performance Engineering. When I removed the intake manifold, the L-shaped MAP sensor air hose broke in half. When I reinstalled the manifold, I used a small piece of 5/32" hose to hook to the "red straw" plus a 5/32" to 1/4" adapter so I could connect a piece of 1/4" vacuum hose from the adapter to the fitting where the L-shaped rubber hose had connected. I plugged in the MAP sensor electrical connector and thought I was done. After installing the intake manifold I keep getting code P0107. After clearing the codes I still get P0107. My question is this: does this code indicate that the electrical connection is not working or that there is a leak in the air hose?

 

Here ya go.

DTC P0107
Circuit Description

The manifold absolute pressure (MAP) sensor responds to pressure changes in the intake manifold. The pressure changes occur based on the engine load. The MAP sensor has a 5-volt reference circuit, a low reference circuit, and a signal circuit. The powertrain control module (PCM) supplies 5 volts to the MAP sensor on the 5-volt reference circuit. The PCM also provides a ground on the low reference circuit. The MAP sensor provides a signal to the PCM on the signal circuit which is relative to the pressure changes in the manifold. The PCM should detect a low signal voltage at a low MAP, such as during an idle or a deceleration. The PCM should detect a high signal voltage at a high MAP, such as when the ignition is ON, with the engine OFF, or at a wide-open throttle (WOT). Certain vehicle models will also use the MAP sensor in order to determine the barometric pressure (BARO). This occurs when the ignition switch is turned ON, with the engine OFF. The BARO reading may also be updated whenever the engine is operated at WOT. The PCM monitors the MAP sensor signal for voltage outside the normal range. If the PCM detects a MAP sensor signal voltage that is excessively low, this DTC will set.
Conditions for Running the DTC

The engine is running.
DTCs P1120, P1125, P1220, P1221, P1275, P1276, P1280, P1281, P1285, P1286, P1514, P1515, P1516, P1517, or P1518 are not set.
The throttle angle is 0 percent if engine speed is less than 800 RPM. OR the throttle angle is more than 12.5 percent if the engine speed is more than 800 RPM.

Conditions for Setting the DTC

The MAP sensor voltage is less than 0.10 volt for more than 4 seconds.

Action Taken When the DTC Sets

The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.

Conditions for Clearing the MIL/DTC

The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
Clear the MIL and the DTC with a scan tool.

Diagnostic Aids

Inspect the MAP sensor vacuum source for leaks, restrictions, or faulty connections.
If an intermittent condition exists, refer to Intermittent Conditions .

Test Description

The numbers below refer to the step numbers on the diagnostic table.

The MAP sensor 5-volt reference circuit is shared with other sensors. If DTC P1635 is set, this indicates that the 5-volt reference circuit is either shorted to ground or shorted to voltage, and should be diagnosed first. The short may be on another sensor 5-volt reference circuit.

Operate the vehicle within the same conditions in which the DTC failed. If you cannot duplicate the DTC, the information included in the Freeze Frame/Failure Records can aid in locating an intermittent condition.

 

The MAP sensor mounts right in the manifold. There is no vacuum line to it. Just the electrical connection.
Unless you don't have a stock manifold?
The little vacuum hose back there connects to the HVAC system. The big hose goes to the brakes.
Ron

 

Hmmm...I wonder if the connector is on the MAP sensor