DTC P128A - Cylinder Head Temperature Sensor Circuit Intermittent/Erratic
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 P128A - CYLINDER HEAD TEMPERATURE SENSOR CIRCUIT INTERMITTENT/ERRATIC
| Description: This DTC sets when the CHT circuit is intermittently open or short while the engine is running. | |||
Possible Causes:
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| Diagnostic Aids: Monitor the CHT PID on a scan tool. Look for sudden changes in the reading when the harness is wiggled or the sensor is tapped. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST DL . | ||