Engine-Codes - Gmc - B0168 GMC

B0168 GMC Code - Passenger Compartment Temperature Sensor 2 Circuit

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- Repair Importance Level: 1/3
- Repair Difficulty Level: 2/3
Table of contents

|What are the Possible Causes of the Code B0168 GMC?

  • Faulty Passenger Compartment Temperature Sensor 2
  • Passenger Compartment Temperature Sensor 2 harness is open or shorted
  • Passenger Compartment Temperature Sensor 2 circuit poor electrical connection
  • Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

|How to Fix the B0168 GMC Code?

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.

|Code B0168 GMC Tech Notes

B0168 05: Passenger Compartment Temperature Sensor 2 Circuit Short to Battery or Open
B0168 02: Passenger Compartment Temperature Sensor 2 Circuit Short to Ground

|What is the Cost to Diagnose the Code B0168 GMC?

Labor: 1.0

The cost to diagnose the B0168 GMC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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|What are Code B0168 GMC Possible Symptoms?

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

|What Does the B0168 GMC Code Mean?

Air temperature sensors allow the Heating, Ventilation, and Air Conditioning (HVAC) Control Module to monitor the temperature of the discharge air in the HVAC ducts. The module applies 5 volts to internal input resistors that are connected to the signal circuits of the air temperature sensors. The module provides ground to the air temperature sensors through the low reference circuit. The HVAC control module monitors the voltage drops across the air temperature sensors and uses the inputs for automatic control calculations. When the duct air temperatures are cold, the resistances of the sensors are high and the voltage signals are high. When the duct air temperatures are hot, the resistances of the sensors are low and the voltage signals are low. The HVAC control module converts the voltage values to count values where 1 volt is approximately equal to 51 counts.

Passenger Compartment Temperature Sensor 2 Circuit

|Need more Information on the B0168 GMC Code?

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|Need Help with the B0168 GMC Code?

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