DTC P0405: Exhaust Gas RECIRCULATION (EGR) Sensor A Circuit Low
WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 2012 Lincoln Navigator L, 2012 Lincoln Navigator, 2012 Lincoln MKZ, 2012 Lincoln MKX, and 2012 Lincoln MKT. However, it is still accessible from the selected car via links, so may be relevant.
P0405 - EXHAUST GAS RECIRCULATION (EGR) SENSOR A CIRCUIT LOW
| Description: The EGR monitor checks the differential pressure feedback EGR sensor signal to the PCM for low voltage. The test fails when the average voltage to the PCM drops to a voltage less than the minimum calibrated value. | |||
Possible Causes:
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| Diagnostic Aids: A DPFEGR PID reading less than 0.05 volt with the ignition ON, engine OFF or running indicates a hard fault. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST HH . | ||