DTC P0403:00: Notes

DTC P0403:00	EGR control circuit problem
DETECTION CONDITION	The PCM monitors the input voltage and current from the EGR valve. If the voltage or current remains low or high, the PCM determines that there is the EGR valve control circuit problem. Diagnostic support note This is a continuous monitor (CCM). The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM. PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle. FREEZE FRAME DATA (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	EGR valve connector or terminals malfunction EGR valve malfunction Short to ground in wiring harness between the following terminals: EGR valve terminal C-PCM terminal 2BC EGR valve terminal D-PCM terminal 2BC EGR valve terminal E-PCM terminal 2K EGR valve terminal A-PCM terminal 2O EGR valve terminal B-PCM terminal 2P EGR valve terminal F-PCM terminal 2T PCM connector or terminals malfunction Short to power supply in wiring harness between the following terminals: EGR valve terminal E-PCM terminal 2K EGR valve terminal A-PCM terminal 2O EGR valve terminal B-PCM terminal 2P EGR valve terminal F-PCM terminal 2T Open circuit in wiring harness between the following terminals: EGR valve terminal C-PCM terminal 2BC EGR valve terminal D-PCM terminal 2BC EGR valve terminal E-PCM terminal 2K EGR valve terminal A-PCM terminal 2O EGR valve terminal B-PCM terminal 2P EGR valve terminal F-PCM terminal 2T PCM malfunction