DTC P0A03: Motor Electronics Coolant Temperature (MECT) Sensor Circuit High
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, 2011 Ford Fusion, 2010 Mercury Milan, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
P0A03 - MOTOR ELECTRONICS COOLANT TEMPERATURE (MECT) SENSOR CIRCUIT HIGH
| Description: | An open circuit on this input or a short to VREF, produces a high voltage (approximately 5 volts) to the powertrain control module (PCM). The PCM activates the high speed fan, and the motor electronics coolant pump. A 10 mV difference exists between an open circuit/short to VREF, and a valid sensor reading at -40°C (-40°F). | ||
| Possible Causes: |
|
||
| Diagnostic Aids: | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST DN . | ||