Engine-Codes - Cadillac - B0338 Cadillac

B0338 Cadillac Code - Inside Air Temperature Sensor Open

- Code Popularity: 775 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 2/3
Table of contents

|What are the Possible Causes of the Code B0338 Cadillac?

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

|How to Fix the B0338 Cadillac 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.

|What is the Cost to Diagnose the Code B0338 Cadillac?

Labor: 1.0

The cost to diagnose the B0338 Cadillac 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 B0338 Cadillac Possible Symptoms?

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

|What Does the B0338 Cadillac Code Mean?

The ambient air temperature sensor allows the Heating, Ventilation, and Air Conditioning (HVAC) Control Module to monitor the temperature of the air surrounding the front of the vehicle. The inside air temperature sensor allows the HVAC control module to monitor the temperature of the air inside the passenger compartment. 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 circuits. The HVAC control module monitors the voltage drops across the air temperature sensors and uses the inputs for automatic control calculations. The HVAC control module also uses the ambient air temperature input to calculate the value of the ambient air temperature display. When the air temperatures are cold, the resistances of the sensors are high and the voltage signals are high. When the air temperatures are hot, the resistances of the sensors are low and the voltage signals are low.

Inside Air Temperature Sensor Open

|Need more Information on the B0338 Cadillac Code?

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|Need Help with the B0338 Cadillac Code?

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