DTC P1106: Charge Air Absolute Pressure (CAAP) Sensor Circuit Performance Problem

NOTE: Atmospheric Absolute Pressure, Charge Air Absolute Pressure and Manifold Absolute Pressure sensors should all have the same value of around 100 kPa when checked with TECH 2 scan tool (ignition on, engine off). If any sensor differs by more than 10 kPa from the others, replace sensor and retest system. See Figure for ECM, CAAP & MAP sensor locations. For ECM replacement, see ENGINE CONTROL MODULE (ECM) under COMPUTERIZED ENGINE CONTROLS in REMOVAL, OVERHAUL & INSTALLATION article.

NOTE: Atmosphere absolute pressure sensor is inside ECM and cannot be replaced separately.

Replace CAAP sensor. See Figure for sensor location. Connect TECH 2 scan tool to Data Link Connector (DLC). Leave ignition off for at least 5 seconds, then start engine and allow to idle. Check scan tool to see if DTC P1106 has reset. If DTC P1106 has not reset, clear DTCs in all systems. If DTC P1106 has reset, substitute known good ECM and retest system.