P0125 TOYOTA
P0125 TOYOTA - Insufficient Coolant Temperature for Closed Loop Fuel Control
|
|
 |
Add Comment
|
Possible causes
- Low engine coolant level
- Leaking or stuck open thermostat
- Faulty Engine Coolant Temperature (ECT) sensor
- Engine Coolant Temperature (ECT) sensor harness is open or shorted
- Engine Coolant Temperature (ECT) sensor electrical circuit poor connection
- Leaking or stuck open thermostat
- Faulty Engine Coolant Temperature (ECT) sensor
- Engine Coolant Temperature (ECT) sensor harness is open or shorted
- Engine Coolant Temperature (ECT) sensor electrical circuit poor connection
Tech notes
There are factory service bulletin for the following Toyota models:
2003 Toyota Corolla
2003 Toyota Matrix
2003 Toyota Corolla and Matrix Factory Service Bulletin OBDII Code P0125
2004-2007 Toyota Prius
2007-2007 Toyota Prius Factory Service Bulletin OBDII Code P0125
2003 Toyota Corolla
2003 Toyota Matrix
2003 Toyota Corolla and Matrix Factory Service Bulletin OBDII Code P0125
2004-2007 Toyota Prius
2007-2007 Toyota Prius Factory Service Bulletin OBDII Code P0125
When is the code detected?
The Engine Control Module (ECM) monitors the ECT signal voltage after engine start-up. If, after sufficient time has passed, the sensor still reports that the engine is not warm enough for closed-loop fuel control, the ECM interprets this as a fault in the sensor or cooling system and sets a Detected Trouble Code (DTC).
Example:
The ECT is 0C (32F) at engine start. After 5 minutes running time, the ECT sensor still indicates that the engine is not warm enough to begin active feedback control of the air-fuel ratio. The ECM interprets this as a fault in the sensor or cooling system and sets a DTC.
Example:
The ECT is 0C (32F) at engine start. After 5 minutes running time, the ECT sensor still indicates that the engine is not warm enough to begin active feedback control of the air-fuel ratio. The ECM interprets this as a fault in the sensor or cooling system and sets a DTC.
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0125 TOYOTA Description
The Engine Coolant Temperature (ECT) sensor is used to monitor the temperature of the engine coolant. The resistance of the sensor varies with the actual coolant temperature. The Engine Control Module (ECM) applies a voltage to the sensor and the varying resistance of the sensor causes the signal voltage to vary.
TOYOTA Technical Service Bulletins for P0125 code
2003 TOYOTA COROLLA Engine And Engine Cooling:engine Details
2003 TOYOTA MATRIX Engine And Engine Cooling:engine Details
2003 TOYOTA COROLLA Engine And Engine Cooling:engine Details
2003 TOYOTA MATRIX Engine And Engine Cooling:engine Details
1999 TOYOTA CAMRY SOLARA Engine And Engine Cooling:engine:gasoline Details
 Help with this |
Need more help?
Do you need more help with the P0125 TOYOTA code? ask a question to our users or search the top hand picked automotive forums for more information
or
or
Ask your facebook friends
Need parts?
Need parts to fix this code? Search hundreds of stores at the same time and compare prices
Help Engine-Codes.com
Help us improve Engine-Codes.com. Leave a comment below or tell us if the information above help you fix the code. What are symptoms is your vehicle for the P0125 TOYOTA code?
Have you replaced any parts? Any information is appreciated. Thanks