Close
I am getting a p0118 high voltage on my 2004 scion xb?
2004 Scion xB

I am getting a P0118 high voltage on my 2004 Scion XB?

(2004 Scion xB)
I have changed the radiator, all hoses, water pump, thermostat, temp. sensor. I have checked the cooling fan and relays all work. I have also checked the connections at the temp. switch. The only thing I have not checked is the wiring harness itself but I put a meter on the wiring and the current seemed good. Drove the car about 120 miles and the problem popped up again. Only happens when I am driving.
What seems to make the problem better or worse? Light only comes on and car shuts down while driving speed does not matter.
Tags: scion, xb
2 answers & 1 comment
Popular Answer
on March 04, 2019
High input = open circuit to coolant temperature sensor..
Sign in to reply
on March 04, 2019

Signal is high while engine is COLD - should decrease as engine warms - likely this problem is flooding engine with excessive fuel after engine has warmed up.
General Diagnosis
$88 - $111 Learn More
on March 04, 2019
High input = open circuit to coolant temperature sensor..
Sign in to reply
on March 04, 2019

Signal is high while engine is COLD - should decrease as engine warms - likely this problem is flooding engine with excessive fuel after engine has warmed up.
I have more of a question than an answer. Why are you changing Cooling System components for a Charging System problem? If you are getting a fault for High Voltage you should be checking your Battery and Alternator.
Sign in to reply

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
I believe the thermostat should have been changed with the new water pump. then it would not have caused , heads...
Current mileage 40,000