DTC P0403-00: EGR Control Valve Control Circuit Problem
WARNING: This page is about a different variant/trim than selected.
P0403-00: (PCM - VIN Y) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
EGR control valve control circuit problem |
| Detection condition |
- The PCM monitors the input voltage from the EGR control valve. If the voltage remain low or high, the PCM determines that the EGR control valve circuit has a malfunction.
|
| Fail-safe |
- Inhibits the EGR control.
|
| Possible cause |
- Malfunction in wiring harness (including connector/terminal) between main relay and EGR control valve (see CIRCUIT INSPECTION
.) (see CLEARING DTC
.)
- Malfunction in wiring harness (including connector/terminal) between EGR control valve and PCM (see CIRCUIT INSPECTION
.) (see CLEARING DTC
.)
- EGR control valve malfunction (Refer to EGR VALVE INSPECTION (VIN Y)
in the service information.)
- PCM malfunction (Refer to applicable PCM REMOVAL/INSTALLATION (VIN Y)
in the service information.)
|
| Repeatability verification procedure |
- Clear the DTC recorded in the memory. (see CLEARING DTC
.)
- Perform the KOEO or KOER self test. (See DTC INSPECTION
.)
|
 Courtesy of MAZDA MOTORS CORP.
|
| 1 |
Battery |
| 2 |
Main relay |
| 3 |
EGR control valve |
| 4 |
PCM |