TSB's MIL Comes on With DTC P0128 (Cooling System Malfunction)

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MIL Comes on With DTC P0128 (Cooling System Malfunction)

Possible Causes
The thermostat jiggle valve may intermittently stick open and cause the PCM to store DTC P0128

Vehicles Affected
2012 Civic with 1.8L - Except CNG
2013 Civic 2-Door with A/T
- from vin 2HGFG3....DH500001 thru
2HGFG3....DH411144

2013 Civic 4-Door with A/T
- from vin 2HGFB2....DH300001 thru
2HGFB2....DH301244
- from vin 2HGFB2....DH500001 thru
2HGFB2....DH542439
- from vin 19XFB2.....DE000001 thru
19xFB2.....DE033981

2013 Civic 4-Door with M/T With 1.8 L - Except CNG

Corrective Action
Replace the thermostat, and make sure the gasket is aligned properly.

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