E04-1 - Maintenance & Troubleshooting discussion in Forkliftaction's forums

Discussion:
E04-1

Toyota 8FGCU25

Does anybody know what this code is for?

Posted 9 Dec 2015 08:30
By Peanut
joined 27 Aug'15 - 1 message
Texas, United States

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I have a Toyota 8FGU25 showing this E 04-1 code & runs terrible at idle. Found & watched a video showing this code - means the engine temperature sensor with 2 wires needs replaced or a wiring issue going to it. I replaced the sensor for $49.00 filled the coolant system & bled it warmed up the engine & still same problem. Next I am going to test the 2 wires going into the plug on this sensor & hoping to find the problem.

Posted 19 Jan 2024 16:03
By Darrell_Hawkins
joined 19 Jan'24 - 1 message
Indiana, United States

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04-1 Coolant temperature sensor open abnormality.
The engine may have a problem at low temperatures.

Posted 29 Dec 2015 05:24
By tomason2
joined 5 Apr'15 - 53 messages
Poland

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