Description
OBD-II Trouble Code Description for P0128 Suzuki
Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
What does this mean?
OBD2 Code P0128 Suzuki definition:
This means that the engine’s PCM detected that the engine has not reached the required temperature level within a specified amount of time after starting the engine. The intent of the P0128 Suzuki code is to indicate a faulty thermostat. Similar codes: P0125 Suzuki In determining the engine did not reach a “normal” temperature, it takes into account the length of time the vehicle has been running, the intake air temperature (IAT) sensor reading, the engine coolant temperature (ECT) sensor reading, and the speed of the vehicle.
Symptoms
Possible sumptoms of OBD code P0128 Suzuki
You will likely not notice any drivability problems other than the MIL illumination.
Causes
Possible causes of OBD code P0128 Suzuki
A code P0128 Suzuki may mean that one or more of the following has happened: Low engine coolant level Leaking or stuck open thermostat Faulty cooling fan (running too much) Faulty coolant temperature (ECT) sensor Faulty intake air temperature (IAT) sensor
Possible Solutions
Past experience indicates that the most likely solution is to replace the thermostat. However here are some suggestions on troubleshooting and repairing a P0128 Suzuki OBD-II code: Verify coolant strength & level Verify proper cooling fan operation (check if it’s running more than it should). Replace if necessary. Verify proper engine coolant temperature (ECT) sensor operation, replace if necessary. Verify proper intake air temperature (IAT) sensor operation, replace if necessary. If the above items check out good, replace the thermostat If Nissan vehicle, check for Technical Service Bulletins (TSBs), as the ECM may need to be reprogrammed to correct the P0128 Suzuki code
The OBD2 Code Information Be Applicable For Suzuki:
2012 Suzuki Swift Sport,2012 Suzuki Splash,2012 Suzuki S-Cross Concept,2012 Suzuki G70 Concept,2011 Suzuki Swift S Concept,2011 Suzuki Swift,2011 Suzuki Kizashi,2010 Suzuki SX4,2010 Suzuki Kizashi,2009 Suzuki Grand Vitara,2009 Suzuki Alto,2008 Suzuki Splash,2008 Suzuki SXForce Concept,2008 Suzuki SX4 Sedan,2008 Suzuki Kizashi,2008 Suzuki Equator,2007 Suzuki XL7,2007 Suzuki SX4,2007 Suzuki Kizashi,2005 Suzuki Swift
Note:
1. The list of automotive Makes at the right edge of the screen. The currently selected ODB-ii codes is for the Suzuki makes.
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