1999 Toyota Tacoma Q&A
1999 Toyota Tacoma Question: Check engine light on
The code helps to point you in a direction. This can be from a bad sensor, bad wire, poor connection, thermostat etc. Here is some info about this fault: http://repairpal.com/OBD-II-Code-P0125 My experience tells me this is a thermostat, are you seeing that the engine is not warming up to operating temperature or it takes a long time to do so? If so, replace the thermostat and reset the check engine light. Good Luck - Bret Bodas
What are problems that a check engine light will find
Occasionally, the Check Engine Light may come on, this can be related to a failed air flow sensor. This type of fault is commonly repaired by cleaning or replacing the air flow sensor.
check engine light came on and i checked all the fluids everything is fine, what could it be?
check engine light has come on and stays on.
Truck running fine all day. Shut off eng for about 30 minutes and cranked back up. Immediately felt misfire/hesitation condition. Got blinking check engine light. Had auto parts store run codes (P0...