Auto Answers » View Question
awd4

awd4 8/30/2012

2005 Mercedes Benz C230 Kompressor 4 Cyl 1.8L

Engine

What is error code p0128?

I searched a few sites and it names the thermostat, I checked my coolant but everything seems fine.

1 Answer


Jimm

Jimm 11/19/2012

P0128 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature). P0128 indicates the engine has not achieved the optimum temperature within the specified amount of time.

Possible Causes:

Low coolant level
Stuck open thermostat
Defective engine coolant temperature (ECT) sensor
Defective intake air temperature (IAT) sensor
Defective cooling fan
Defective cooling fan relay

Possible Solutions:

Top off coolant
Replace thermostat
Replace engine coolant temperature (ECT) sensor
Replace Intake air temperature (IAT) sensor
Replace cooling fan
Replace cooling fan relay

Reply
1

Answer this question

( characters left)

Follow Question

what's this?
advertisement
advertisement