P1406

Schematic:

The Exhaust Gas Recirculation (EGR) solenoid and pintle valve assembly serve to reduce the temperature of combustion by introducing non-volatile exhaust gas into the combustion chambers. During normal operation of the EGR Valve the actual position corresponds to the commanded position. If the EGR should become slow to respond or begins to deviate from the commanded position, this code will set.

DTC PARAMETERS
This DTC will set when:
^ Deviation between commanded and actual position of EGR value greater than 20 percent for longer than 10 seconds.

DTC P1403 is a (type B) DTC.

DIAGNOSTIC AIDS
Possible causes:
^ EGR valve stuck or carbon plugged
^ Corrosion in connector
^ EGR valve frozen from moisture in exhaust system (extreme cold conditions only)
^ EGR