P2282

DTC P2282: Intake Manifold Air Leak

Circuit Description
The Manifold Absolute Pressure (MAP) sensor measures the changes in the intake manifold pressure which result from engine load (intake manifold vacuum) and RPM changes. The MAP sensor converts these changes into a voltage output. The Engine Control Module (ECM) sends a 5 volt reference voltage to the MAP sensor. As the intake manifold pressure changes, the output voltage of the MAP sensor also changes. A low voltage (high vacuum) output of 1 - 2 V is present at idle. A high voltage (low vacuum) output of 4.0 - 4.8 V is present at wide open throttle. A large quantity of air entering the engine indicates and acceleration or high load condition while a small quantity of air indicates a deceleration or idle condition. Under idle conditions, the MAP estimate correction is a weighted difference between the predicted MAP and the actual MAP reading.

Conditions for Setting the DTC
- No relevant DTCs are set.
- Engine run time is greater than 2 seconds.
- Barometric Pressure (BARO) is greater than 72 kPa (10.4 psi).
- Engine Coolant Temperature (ECT) is higher than -10 °C (14 °F).
- Ignition voltage is between 11 and 16 V.
- Intake Air Temperature (IAT) is higher than -20 °C (-4 °F).
- Above conditions met for more than 3 seconds.

Action Taken When the DTC Sets
- The Malfunction Indicator Lamp (MIL) will illuminate.
- The ECM will record operating conditions at the time the diagnostic fails. This information will be stored in the Freeze Frame and Failure Records buffers.
- A history DTC is stored.

Conditions for Clearing the MIL/DTC
- The MIL will turn OFF after four consecutive validation cycles in which the diagnostic runs without a fault.
- A history DTC will clear after 40 consecutive warm up cycles without a fault.
- The DTC(s) can be cleared using the scan tool.

Step 1-3:

Step 4-6:

Troubleshooting