DTC P0403: Exhaust Gas RECIRCULATION (EGR) Control Circuit
WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 2013 Lincoln Navigator, 2013 Lincoln MKZ, 2013 Lincoln MKX, 2013 Lincoln MKT, and 2013 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0403: EXHAUST GAS RECIRCULATION (EGR) CONTROL CIRCUIT
| For Vehicles with an EGR system module (ESM) | |||
| Description: | This test checks the electrical function of the EGR vacuum regulator solenoid. The test fails when the EVR circuit voltage is either too high or too low when compared to the expected voltage range. The EGR system must be enabled for the test to be completed. | ||
| Possible Causes: |
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| Diagnostic Aids: | The EGR vacuum regulator solenoid resistance is between 26 and 40 ohms. | ||
| For All Others | |||
| Description: | The electric EGR (EEGR) system is continuously monitored to check the four EEGR motor coils, circuits, and the PCM for opens, shorts to voltage and ground. If a concern is detected, the EEGR system is disabled and additional monitoring is suspended for the remainder of the drive until the next drive cycle. | ||
| Possible Causes: |
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| Diagnostic Aids: | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| E-Series 4.6L, Mustang 5.8L |
GO to PINPOINT TEST HH . | ||
| All others | GO to PINPOINT TEST KD . | ||