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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 1025 (Engine Controls - Powertrain DTC Charts And Descriptions - (Hybrid)) >> DTC Diagnosis >> P0A02 - Motor Electronics Coolant Temperature (MECT) Sensor Circuit Low

P0A02 - Motor Electronics Coolant Temperature (MECT) Sensor Circuit Low

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
P0A02 - MOTOR ELECTRONICS COOLANT TEMPERATURE (MECT) SENSOR CIRCUIT LOW

Description:  A short to ground or signal return on the MECT circuit produces a low voltage (approximately 0 volt) to the powertrain control module (PCM). A minimum of 100 mV difference exists between the short circuit voltage and a valid sensor reading at 150°C (302°F).
Possible Causes: 
  • Motor electronics cooling system concerns
  • Damaged MECT sensor
  • MECT harness concerns
  • Damaged transaxle
Diagnostic Aids:   
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All   refer to PINPOINT TEST DN .