B2645 2016 Chevrolet Silverado Code - Ambient Light Sensor Circuit
Quick Answer
The ambient light sensor is used to monitor outside lighting conditions. Common causes include Faulty Ambient Light/Sunload Sensor, Ambient Light/Sunload Sensor harness is open or shorted, Ambient Light/Sunload Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B2645 2016 Chevrolet Silverado indicates Ambient Light Sensor Circuit.
- Common causes
- Common causes include Faulty Ambient Light/Sunload Sensor, Ambient Light/Sunload Sensor harness is open or shorted, Ambient Light/Sunload Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B2645 2016 Chevrolet Silverado Description
What are the Possible Causes of the DTC B2645 2016 Chevrolet Silverado?
- Faulty Ambient Light/Sunload Sensor
- Ambient Light/Sunload Sensor harness is open or shorted
- Ambient Light/Sunload Sensor circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B2645 2016 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B2645 2016 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the B2645 2016 Chevrolet Silverado code?
Need more information on how to fix the B2645 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B2645 2016 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B2645 2016 Chevrolet Silverado Code
1. What does the OBDII code B2645 mean on a 2016 Chevrolet Silverado?
The code B2645 refers to an issue with the Ambient Light Sensor Circuit, which monitors and adjusts the vehicle's interior lighting based on external light conditions.
2. What are common symptoms of the B2645 code?
Symptoms may include malfunctioning automatic headlights, interior lighting that doesn’t adjust properly, or the dashboard remaining too dim or too bright.
3. What causes the B2645 code to appear?
Common causes include a faulty ambient light sensor, damaged wiring or connectors in the circuit, or a malfunctioning body control module (BCM).
4. How do I diagnose the B2645 code?
Start by visually inspecting the ambient light sensor and its wiring for damage. Use a scan tool to check for related codes and test the sensor’s voltage and resistance.
5. Can a dirty windshield cause the B2645 code?
While unlikely, a dirty windshield or obstruction near the sensor can affect its performance but typically does not trigger this specific code.
6. How is the B2645 code fixed?
Repairs may involve replacing the ambient light sensor, repairing damaged wiring or connectors, or reprogramming or replacing the BCM if necessary.
7. Where is the ambient light sensor located on a 2016 Chevrolet Silverado?
The ambient light sensor is generally located on the dashboard near the base of the windshield, where it can measure external light.
8. Can I drive my 2016 Silverado with the B2645 code active?
Yes, the vehicle is drivable, but features like automatic headlights or proper interior lighting adjustments may not work as intended.
9. How much does it cost to repair the B2645 code?
Repair costs vary but typically range from $50 to $200, depending on whether the issue is with the sensor, wiring, or BCM.
10. Can disconnecting the battery clear the B2645 code?
Disconnecting the battery may temporarily clear the code, but if the underlying issue isn’t resolved, the code will likely return.
Discuss the causes and fixes for B2645 2016 Chevrolet Silverado OBDII Code
Code B2645 2016 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
