P0118

Engine Coolant Temperature Sensor Circuit 1 High Input

DTC P0118, sometimes indicated as P011800 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the air/fuel mixture causing engine coolant temperature sensor circuit 1 high input.

The engine coolant temperature sensor measures the temperature of the engine coolant. The ECM uses this signal to control the engine cooling fan, fuel injection, and ignition timing. The DTC P0118 is set when the ECM detects a high input signal from the engine coolant temperature sensor.
There are several possible causes for this DTC. One common cause is a faulty engine coolant temperature sensor. Another common cause is a short or open circuit in the wiring harness. A loose or corroded connector can also cause this DTC.

  • P0118: Engine Coolant Temperature Sensor Circuit 1 High Input
  • P0118: Engine Coolant Temperature Sensor 1 Circuit High
  • P0118: Engine Coolant Temp Circuit High Input
  • P0118: Engine coolant temperature (ECT) sensor – high input
  • P0118 00: Engine temperature sensor - signal too high
  • P0118 00: Engine coolant temperature (ECT) sensor - high input

DTC Trouble Code Search
Bulletins

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

  • TSB 21-2168 - ENGINE AND ENGINE COOLING
    FORD: Some 2018-2020 f-150 vehicles equipped with a 2.7l ecoboost engine may exhibit an illuminated malfunction indicator lamp (mil) and/or engine coolant over temperature warning with diagnostic trouble codes (dtcs) P0116, P0117, P0118, P0119, p
  • SSM 49004 - ENGINE AND ENGINE COOLING
    LINCOLN: Some 2020 explorer/aviator vehicles equipped with a 3.0l ecoboost engine may exhibit an illuminated malfunction indicator lamp (mil) and/or engine coolant over temperature warning with diagnostic trouble codes (dtcs) P0116, P0117, P0118, p0
  • SSM 46906 - ENGINE AND ENGINE COOLING
    LINCOLN: Some 2015-2018 f150/edge, 2016-2018 mkx and 2017-2018 fusion, continental vehicles equipped with a 2.7l engine may experience a malfunction indicator lamp (mil) and/or wrench lamp with diagnostic trouble codes (dtcs): P0116, P0117, P0118, p
  • TSB-14-0068 - ENGINE (PWS)
    FORD: Ford: the powertrain control module (pcm) memory has a continuous memory diagnostic trouble code (cmdtc), P0118, stored that causes the malfunction indicator light (mil) to be illuminated. Model 2013 focus. *pe
  • 05-002-12 - ENGINE AND ENGINE COOLING
    DODGE: Chrysler: mil illuminate P0117 engine coolant temperature sensor circuit low or P0118 engine coolant temperature sensor circuit high. *js
  • PI-0067 - ELECTRICAL SYSTEM:WIRING
    CADILLAC: Cadillac: intermittent malfunction indicator lamp (mil)/check engine light on, reduced engine power message, dtcs P0116, P0117, P0118, P0119, P00C9, P0091 set. This condition may be caused by chafing of the engine wiring as the harness ro
  • 040604060 - ENGINE AND ENGINE COOLING:ENGINE
    CADILLAC: Engine cranks but does not start, no injector pulses, diagnostic trouble code codes P0118, P0122, P0335, P0385, P0412, and/or P0340 set. *tt
  • 01113 - UNKNOWN OR OTHER
    FORD: Some vehicles built prior to 1/9/2001 may exhibit a malfunction indicator lamp (mil) along with a diagnostic trouble code (dtc) P0118 stored in memory with no driveability symptoms. *tt
  • 010113 - UNKNOWN OR OTHER
    FORD: Some vehicles built prior to 1/9/2000 may exhibit a malfunction indicator lamp along with a diagnostic trouble code P0118 stored in memory with no driveability symptoms. *jb
  • 14543 - UNKNOWN OR OTHER
    FORD: Some vehicles equipped with 2.0l spi engine may exhibit a check engine light on and diagnostic trouble code P0118. *tt
  • 97110197T45 - ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
    SATURN: Service information on incorrect dtcs P0112,P0113,P0117 and/or P0118 stored in pcm memory. *yc
Consumer Complaints for this DTC



2011 CHEVROLET CRUZE with 55000.0 miles

While i was driving on the highway, a warning came on saying that my a/c was turned off because my engine was overheating and my check engine light came on. My temperature gauge was on cold. When i first took my car to the dealership, they could not figure out what was wrong. They cleared the codes and told me to come back if the warning came back on. Three weeks later, the warning came on again when driving on the highway. The first time the warning came on, i had been driving for about 6 hours. After the codes were cleared, the warning came back on when i had been driving for about 2.5 hours. In the two weeks between the warning coming back on and when i took it back to the dealership, sometimes the warning would come on right away when i turned on the car. Other times, it would take 10 mins of driving before it would come on. When i drove, the temperature gauge would fluctuate between cold and halfway between cold and hot. After fluctuating for a few minutes, it would go to cold and the warning would come on. I took it back and the dealership told me that my coolant thermostat sensor and housing needed replacing. The car had error codes P0118 and P0117. As this problem could cause my engine to overheat and it seems like it is a common problem with the chevy Cruze, i do not understand why there has not been a recall yet. The warning occurred with a little less than 55,000 miles on the car.
ENGINE,



2000 HYUNDAI ELANTRA

I bought a brand new 2004 Hyundai Elantra from fuccilo's in schenectady, ny in march of 2001. I have maintained the car. On friday oct 08, 2004 i was driving on the northway and after 20 minutes of driving the car started overheating and i pulled off the road immediately. No warning lights came on and the car's speed dropped dramatic to 0. It was towed to my mechanic and he looked at everything and said that the cooling fan was melted and the wire harness on top valve cover was totally melted and that the belts looked fine. He said it was something internal in the engine and i had to have it towed to fuccillo's because the engine is gone and it would be a warranty issue. After having it towed to fuccillo's my husband and i went there to see what was going to be done. The mechanic opened the hood, did not take anything apart and said it was the timing belt that broke and it was my fault so it would not be warrantied. They offered me 50.00 for the car towards a new car. I already owe 5000.00 on the vehicle, i only had it for 3 threes. I called my mechanic who had taken it apart and confirmed with him that the timing belt was fine. I called fuccillo's back and the mechanic said he would look at it but it would cost me 80.00. I agreed because i had no choice. I then received a phone call days later telling me that the belt "jumped" and damaged the engine so it would not be covered he also stated that another code (P0118) came up but he didn't know what that meant. He told me that they would not do anything else that i had a choice of trading it or paying 6000.00 for a new engine. *ak
ENGINE AND ENGINE COOLING:COOLING SYSTEM,

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