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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 2277 (Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid) - DTC P0001 - P0209) >> Diagnostic Trouble Code (DTC) Charts And Descriptions >> P0128 - Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)

P0128 - Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2017 Lincoln Navigator, 2017 Lincoln MKZ, 2017 Lincoln MKX, 2017 Lincoln MKT, and 2017 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
P0128 - COOLANT THERMOSTAT (COOLANT TEMP BELOW THERMOSTAT REGULATING TEMPERATURE)

Description:  This DTC sets when the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time.
Possible Causes: 
  • Insufficient warm up time
  • Low engine coolant level
  • Leaking or stuck open thermostat
  • Damaged engine coolant temperature (ECT) sensor
  • Damaged cylinder head temperature (CHT) sensor
Diagnostic Aids:  Refer to THERMOSTAT MONITOR for system information.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
Continental 2.0L,
Continental 2.7L,
Continental 3.0L,
EcoSport,
Edge 2.0L,
Edge 2.7L,
Escape/Kuga 1.5L,
Escape/Kuga 2.0L,
Explorer 2.3L, F-150 2.7L,
Fiesta,
Focus,
Fusion 1.5L,
Fusion 2.0L,
Fusion 2.7L,
KA,
MKC,
MKT 2.0L,
MKX 2.0L,
MKX 2.7L,
MKZ,
Mustang 2.3L,
Taurus 2.0L		 GO to Pinpoint Test DX .
All others GO to Pinpoint Test DL .
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