coolant temperature below thermostat regulating temperature

#Coolant temperature below thermostat regulating temperature code

I don't see why it would be targeting that temp and still at 228, though. To diagnose the P0128 Cadillac code, it typically requires 1.0 hour of labor.

#Coolant temperature below thermostat regulating temperature code

The P0128 OBD-II trouble code is a generic powertrain diagnostic code (it has the same meaning for the Acura RDX as any other vehicle). I've never seen it in MHD or BM3, or any other datalogs for that matter, but that doesn't mean its not real. P0128 Definition: Coolant Temp Below Thermostat Regulating Temp. It so happens that I replaced the thermostat 2-1/2 months / 2,000 miles ago.

Using the sensors that measure the air temp (ambient) as well as the temperature of the coolant, if the computer finds a deviation from what it expects or the value is completely out of bounds from what it should be (rationality), it illuminates the CEL and saves a P0128. The most common cause Im seeing for this are a thermostat stuck open. Your Cherokee's computer knows how long it should take for the car to warm up. The target coolant temp is way to low, i am wondering if that is even a 'real' parameter from the DME, since some apps/readers can display parameters that are not applicable to your car so they just show some random value. HI Jonathan, The P0128 code is very common. HEATING ELEMENT OK PASS PERFORM AL20. 9993 SDS TEST CODE PO 12800 R48 THERMOSTAT PERFORM TEST THERMOSTAT. So I thought my IAT may be bad, so for 20 I changed that, but I am still getting the CEL and, in addition, code p0113 'IAT sensor 1 circuit high input'. 453 WEXP (N/C) PARTS: 0.00 LABOR: 0.00 OTHER: 0.00 TOTAL LINE A: 0.00. CEL p0128 code 'coolant temp below thermostat regulating temp'.

thoughts?Ģ28F is right on for normal coolant operating temp under low load/normal conditions. CKE CUSTOMER STATES THE CHECK ENGINE LIGHT IS ON. 109 seems way too low, i would have expected 210-250F, but I don't have much reason to back that up. The coolant temp sensor is responsible for telling the Engine Control Module (ECM) the engine’s coolant. The P0128 OBD-II trouble code is a generic powertrain diagnostic code (it has the same meaning for the Toyota Highlander as any other vehicle). So I drove my car around the block last night and then let it sit running in the drive way for 45 minutes or so, and the coolant temp leveled off around 228F, but the Target temperature coolant was at 109F the entire time. P0128 Definition: Coolant Temp Below Thermostat Regulating Temp.