P0106
DTC P0106
Circuit Description
The manifold absolute pressure (MAP) sensor that resides in the engine intake manifold is integrated with the intake air temperature (IAT) sensor 2. The purpose of this integrated sensor is to measure the following:
* The atmospheric pressure and the vacuum or the reduced pressure that exists under different operating conditions in the engine intake manifold
* The supercharged air pressure that exists under high load or wide open throttle conditions in the engine intake manifold
* The IAT sensor 2 after the supercharger and the intercooler as it enters the engine intake manifold
* The IAT sensor 2 after the supercharger bypass valve and the intercooler as it enters the engine intake manifold
The MAP/IAT sensor 2 has the following types of circuits:
* A powertrain control module (PCM) supplied and regulated MAP 5-volt reference circuit
* A PCM supplied ground for the low reference circuit that is shared by the MAP and the IAT sensor 2
* A MAP sensor signal circuit that supplies a voltage input to the PCM
* A PCM supplied 5-volt, IAT signal circuit
The diaphragm within the MAP sensor responds to all of the various pressure changes in the intake manifold and provides a signal voltage to the PCM on the signal circuit relative to those pressure changes.
The PCM monitors the MAP sensor signal for voltage that is outside of the normal range of a properly operating sensor. If the PCM detects a MAP sensor signal that is not within range of a calibrated limit of the estimated value, DTC P0106 sets.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P0106 Manifold Absolute Pressure (MAP) Sensor Performance
Conditions for Running the DTC
* DTCs P0107, P0108, P0120, P0121, P0220, P0506, P0507, P2135 are not set.
* The engine speed is between 400-6,400 RPM.
* The engine coolant temperature (ECT) is between 70-125°C (158-257°F).
* The IAT is between -7 to +125°C (+19 to +257°F).
* The change in throttle position (TP) is less than 5 percent.
* The above enabling criteria must be stable for more than 5 seconds.
* DTC P0106 runs continuously when the above conditions are met.
Conditions for Setting the DTC
* The PCM detects that the MAP sensor signal is 25 kPa more than the calibrated estimate for more than 90 seconds.
OR
* The PCM detects that the MAP sensor signal is 45 kPa less than the calibrated estimate for more than 90 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.
Test
