Engine-Codes - Chevrolet - B018A CHEVROLET

B018A CHEVROLET Code - Windscreen Temperature Sensor Circuit

- Code Popularity: 3,036 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 2/3
Table of contents

|What are the Possible Causes of the B018A CHEVROLET Code?

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

|How to Fix the B018A CHEVROLET 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.

|B018A CHEVROLET code tech notes

B018A 02: Windscreen Temperature Sensor Circuit Short to Ground
B018A 05: Windscreen Temperature Sensor Circuit Short to Battery or Open

|What is the cost to diagnose the B018A CHEVROLET code?

Labor: 1.0

The cost to diagnose the B018A CHEVROLET 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.

|What are B018A CHEVROLET code possible symptoms?

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

|What Does the B018A CHEVROLET Code Mean?

The windscreen temperature and inside moisture sensor integrates the relative humidity sensor, windscreen temperature sensor and humidity sensing element temperature sensor. This sensor assembly provides information about relative humidity level on inside windscreen, temperature of the inside windscreen and temperature of the humidity sensor element.
The relative humidity sensor measures the relative humidity on the compartment side of the windscreen. It also detects the temperature of the windscreen surface on the compartment side. Both values are used as control inputs for the Heating, Ventilation, and Air Conditioning (HVAC) Control Module application to calculate the fog risk on windscreen compartment side and ability to reduce fuel consumption by decreasing A/C compressor power to a minimum without causing any fog. The sensor will also enable partial recirculation mode in order to improve heat-up performance of the passenger compartment under cold ambient temperature conditions without the risk of mist build-up on the windscreen. The humidity sensor element temperature sensor supplies the temperature of the humidity sensor element. It is only needed if the thermal contact between the humidity sensing element and the inside windscreen surface is not sufficient.

Windscreen Temperature Sensor Circuit

|Need more information with the B018A CHEVROLET code?

Need more information on how to fix the B018A CHEVROLET code?
Get Access to Factory Service Manuals

|Need help with a B018A CHEVROLET code?

Get the b018a chevrolet code diagnosed by a professional: Find a repair shop in your area