Engine-Codes - Acura - P0118 Acura

P0118 Acura Code - Engine Coolant Temperature Sensor 1 Circuit High Voltage

- Code Popularity: 34,409 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P0118 Acura?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Engine Coolant Temperature (ECT) Sensor 1
  • Engine Coolant Temperature Sensor 1 harness is open or shorted
  • Engine Coolant Temperature Sensor 1 circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)
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How to Fix the DTC P0118 Acura?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0118 Acura code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P0118 Acura Code Mean?

The Engine Coolant Temperature (ECT) Sensor 1 is used for air/fuel ratio feedback control, ignition timing control, idle speed control, and other functions. ECT Sensor 1 resistance varies depending on the engine coolant temperature. As the engine coolant cools, ECT Sensor 1 resistance increases, and the Powertrain Control Module (PCM) detects a high signal voltage. As the engine coolant warms, ECT Sensor 1 resistance decreases, and the PCM detects a low signal voltage. If the ECT Sensor 1 output voltage is a set value, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).
P0118 Acura Code - Engine Coolant Temperature Sensor 1 Circuit High Voltage

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