Engine-Codes - Gmc - P112F GMC

P112F GMC - Radiator Coolant Temperature Sensor

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P112F GMC Possible Causes

  • Faulty Radiator Coolant Temperature Sensor
  • Radiator Coolant Temperature Sensor harness is open or shorted
  • Radiator Coolant Temperature Sensor circuit poor electrical connection

How is the P112F GMC code repair?

Start by checking 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's pins.

What is the cost to diagnose the P112F GMC code

Labor: 1.0

The cost to diagnose the P112F GMC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

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

P112F GMC Meaning

The engine Radiator Coolant Temperature (RCT) Sensor is a variable resistor that measures the temperature of the engine coolant in the radiator. The Engine Control Module (ECM) supplies 5 volts to the engine coolant radiator temperature signal circuit and supplies a ground to the low reference circuit. The purpose of this diagnostic is to determine if the input from the RCT sensor is skewed warmer than normal. The internal clock of the ECM will record the amount of time the engine is OFF. If the required engine OFF time is met at start-up, the ECM will compare the temperature difference between the actual measured RCT and ECT sensors.

More Information

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