EGR Solenoid Circuit

NAME OF CODE
EGR Solenoid Circuit

WHEN MONITORED
With the ignition key ON and engine running.

SET CONDITION
The Exhaust Gas Recirculation (EGR) solenoid control circuit is not in the expected state when requested to operate by the Powertrain Control Module (PCM).

THEORY OF OPERATION
The EGR solenoid is actuated by the PCM when the engine is at normal operating temperature. The Throttle Position Sensor shows other than idle or Wide Open Throttle (WOT) and Manifold Absolute Pressure (MAP) is in mid operating range. The PCM looks for a current spike when actuating the solenoid. If the spike is not present the PCM sets a trouble code.

POSSIBLE CAUSES
- Open or shorted control circuit
- Open fused ignition switch output circuit
- Open or shorted solenoid control coil
- PCM failure