DTC P2457 - EGR Cooler A Efficiency Below Threshold
WARNING: This page does not describe the selected car, but rather 24 other vehicles, including the 2019 Lincoln Navigator, 2019 Lincoln Nautilus, 2019 Lincoln MKZ, 2019 Lincoln MKT, and 2019 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
DTC DESCRIPTION P2457 - EGR COOLER A EFFICIENCY BELOW THRESHOLD
| Description: This DTC sets when the difference between the expected temperature of the exhaust gas and the actual exhaust gas recirculation temperature bank 1, sensor 2 (EGRT12) value is greater than a calibrated amount. | |||
Possible Causes:
|
|||
| Diagnostic Aids: | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST HE . | ||