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2006 Ford Focus ZX3 P0128

Model: 2006 Ford Focus ZX3 Fault Code: P0128 Posted: 2014-11-26 09:40

The engine is a 2.0L Duratec and has 100K miles. I live in Phoenix, AZ. This is the third straight year this problem has happened...approximately 65K miles first time it happened. In October, when it cools off here, the check-engine light with the P0128 code comes on. That code indicates low coolant, bad thermostat and/or sensor. Coolant and temperature gauge are OK...the car runs fine. In March, when it starts warming up here, the check-engine light goes off. I haven't changed anything. Any ideas? Arnold

Related fault codes
P0128
Comments (3)
Anonymous 2014-11-27 10:04

Change the thermostat with the proper temp. thermostat that Ford calls for.

Anonymous 2014-11-27 10:22

Thanks...I will do that early next week...I'll post the result. Do you think the engine is running cold?

Anonymous 2014-11-28 08:31

Yup.