P0118 Engine Coolant Temperature Sensor high Voltage

Voltmeter https://amzn.to/36BYtcc Canadian link Voltmeter https://amzn.to/3wNwReF Source https://www.autoblog.com/2016/03/25/p0118-obd-ii-trouble-code-engine-coolant-temperature-ect-sens/ P0118 is the OBD-II generic code that indicates the Engine Control Module (ECM) has seen the ECT sensor output go more than 4.91 V or less than -40°C (-40°F). What causes the P0118 code? The ECT sensor range input to the ECM went to 4.91 or less than -40 deg F indicating an open circuit in the sensor, connector or wiring. What are the symptoms of the P0118 code? The ECM turns the Check Engine Light on and goes into failsafe mode, substituting input to 176 deg F. The engine may have a hard start when engine is cold, and start normal when warm. The engine may run rough and hesitate until the engine warms up. The engine should run close to normal once the engine warms up. Note: The symptoms are determined by the manufacturer failsafe ECM strategy for the vehicle during a failure and may vary between manufacturers and vehicles. How does a mechanic diagnose the P0118 code? Inspects for disconnected sensor connectors or damaged connectors Scans and documents the codes received and views the freeze frame data to see when the code was set Clears the OBD-II fault codes and retests the system to see if the code comes back Disconnects the sensor connector and inspects for corrosion or bent pins and repairs as needed. Connects the two connector pins together to see if the output on scanner shows above 284 deg F, indicating the wiring is okay, and replaces the ECT sensor Above 284 deg F, the circuit has an open circuit in the wiring, connector or ECM and will be fixed by the technician Common mistakes when diagnosing the P0118 code Not visually inspecting the problem area first Not following the manufacturer's pinpoint test procedure step-by-step, and skipping steps Replacing the ECT sensor without knowing for sure that it is the problem Not connecting it and viewing the ECM data to see if the temperature output from the sensor is as expected before installation of the new ECT sensor DISCLAIMER: Due to factors out of the control of Bullshitkorner and Bsk Garage, we cannot guarantee against improper use or unauthorized modifications of this information. Bullshitkorner and Bsk garage assumes no liability or responsibility for property damages or injury incurred as a result of any information contained in this video and all other videos produced by Bullshitkorner and Bsk Garage. Use this information at your own risk. Bullshitkorner and Bsk Garage recommends safe practices when working on vehicles and/or with tools seen in this video. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Bullshitkorner and Bsk Garage Be safe! This video and description contain affiliate links, which means that if you click on one of the product links, we receive a small commission. This helps support the channel and allows us to continue to make videos like this. Thank you for the support!

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