Engine-Codes - Generic - B0163

B0163 Code - Passenger Compartment Temperature Sensor Circuit

- Code Popularity: 2,635 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 2/3
Table of contents

|What are the Possible Causes of the Code B0163?

  • Faulty Ambient Light/Sunload Sensor
  • Ambient Light/Sunload Sensor harness is open or shorted
  • Ambient Light/Sunload Sensor circuit poor electrical connection
  • Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

|How to Fix the B0163 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 B0163 Tech Notes

B0163:02 Passenger Compartment Temperature Sensor Circuit Short to Ground
B0163:05 Passenger Compartment Temperature Sensor Circuit Short to Battery or Open

|What is the Cost to Diagnose the Code B0163?

Labor: 1.0

The cost to diagnose the B0163 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 B0163 Possible Symptoms?

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

|What Does the B0163 Code Mean?

The ambient light/sunload sensor integrates the sunload sensor and passenger compartment temperature sensor into a single assembly.
The solar sensor is connected to a low reference and a 5 V biased (pull-up) signal circuit voltage from the Heating, Ventilation, and Air Conditioning (HVAC) Control Module. As the sunload increases, the sensor signal voltage decreases. The signal varies between 0.1 - 4.9 V and is provided to the HVAC control module.
The passenger compartment temperature sensor is a negative temperature coefficient thermistor. A signal and low reference circuit enable the sensor to operate. As the air temperature increases, the sensor resistance decreases. The sensor signal varies between 0 - 5 V.
Bright or high-intensity light causes the vehicle's interior temperature to increase. The HVAC system compensates for the increased temperature by diverting additional cool air into the vehicle.

B0163 Code - Passenger Compartment Temperature Sensor Circuit

|Need more Information on the B0163 Code?

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|Code B0163 Information for Specific Makes

|Need Help with the B0163 Code?

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