DTC P1406: EGR Pintle Position Error: Description

The Exhaust Gas Recirculation (EGR) valve position sensor is monitored by the Engine Control Module (ECM). The 5-volt reference circuit, low reference circuit and the EGR valve position signal circuit are used by the ECM to determine the EGR valve position. If the difference between the actual EGR valve position and the ECM desired EGR valve position is more than 20 percent, DTC P1406 sets.