DTC P0403: EGR Control Circuit Malfunction (2014 2015)
General Description
The powertrain control module (PCM) controls the exhaust gas recirculation (EGR) valve opening. The system includes the EGR actuator, the EGR valve, the EGR valve position sensor and the PCM. The EGR valve position sensor is a semiconductor type, and it is attached to the EGR valve and shaft to determine EGR valve position. The EGR valve position signal from the EGR valve position sensor is transmitted to the PCM for target position feedback control. If the signal from the EGR actuator is a fixed value for a set time, the PCM detects an EGR actuator system malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type, OBD Status
| Execution | Continuous |
| Sequence | None |
| Duration | 200 milliseconds or more |
| DTC Type | Two drive cycles, MIL on |
| OBD Status | PASSED/FAILED/NOT COMPLETED (STILL TESTING) |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| 12 volt battery voltage [BATTERY] | 10.0 V | - |
| Vehicle | ON mode | |
[ ]: HDS Parameter
Malfunction Threshold
The EGR actuator current is 11 A or more for at least 200 milliseconds.
Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- EGR actuator DC EGR + line short
- EGR actuator DC EGR - line short
- EGR actuator failure
- PCM internal circuit short
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the PCM memory. If the malfunction returns in the next (second) drive cycle, the MIL comes on and a Confirmed DTC and the freeze data are stored.
Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the 12 volt battery.