Engine-CodesChevrolet – P155B 2016 Chevrolet Silverado

P155B 2016 Chevrolet Silverado Code - Cruise Control Set/Coast Switch 2 Circuit

Quick Answer

The P155B diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado refers to an issue with the Cruise Control Set/Coast Switch 2 Circuit. Common causes include Faulty cruise control switch, Damaged wiring harness, Defective cruise control module. 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
P155B 2016 Chevrolet Silverado indicates Cruise Control Set/Coast Switch 2 Circuit.
Common causes
Common causes include Faulty cruise control switch, Damaged wiring harness, Defective cruise control module.
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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P155B 2016 Chevrolet Silverado Description

The P155B diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado refers to an issue with the Cruise Control Set/Coast Switch 2 Circuit. This code indicates that there is a malfunction in the circuit responsible for controlling the cruise control system's set and coast functions. The cruise control system allows the driver to set a desired speed for the vehicle to maintain automatically, providing convenience and reducing driver fatigue on long trips.

OBDII Code P155B 2016 Chevrolet Silverado - Cruise Control Set/Coast Switch 2 Circuit
P155B 2016 Chevrolet Silverado Code - Cruise Control Set/Coast Switch 2 Circuit

Common Causes of P155B 2016 Chevrolet Silverado

  1. Faulty cruise control switch
  2. Damaged wiring harness
  3. Defective cruise control module
  4. Corrosion or poor connections in the circuit
  5. Electrical issues such as blown fuses or relays

Symptoms of P155B 2016 Chevrolet Silverado

  1. Inability to engage cruise control
  2. Cruise control engaging but not maintaining set speed
  3. Cruise control set/coast buttons not responding
  4. Illumination of the cruise control warning light on the dashboard

How to Fix P155B 2016 Chevrolet Silverado

  1. Begin by conducting a thorough inspection of the cruise control set/coast switch 2 circuit, including the switch itself, wiring, and control module.
  2. Test the cruise control switch for proper functionality using a multimeter to check for continuity.
  3. Inspect the wiring harness for any signs of damage, corrosion, or loose connections. Repair or replace any damaged wiring as needed.
  4. Check the cruise control module for faults or malfunctions. Replace the module if necessary.
  5. Clear the DTC from the vehicle's computer using a diagnostic scan tool and test the cruise control system to ensure proper operation.

Cost to Fix P155B 2016 Chevrolet Silverado

The typical repair costs for addressing the P155B code on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, parts such as a cruise control switch, wiring harness, or control module can range from $50 to $200 each, not including labor costs. Labor rates at auto repair shops typically range from $80 to $150 per hour. Therefore, the total repair cost for this issue could range from $150 to $500 or more, depending on the extent of the repairs needed. It's recommended to consult with a professional mechanic for a more accurate estimate based on the specific diagnosis and repair requirements for your vehicle.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P155B 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P155B in a 2016 Chevrolet Silverado related to the Cruise Control Set/Coast Switch 2 Circuit?

- Common symptoms may include non-functional cruise control, illuminated warning lights on the dashboard, and potential issues with the vehicle's speed control system.

2. What are some possible causes of OBDII code P155B in a 2016 Chevrolet Silverado?

- Possible causes could be a faulty cruise control switch, damaged wiring or connectors in the cruise control circuit, or a malfunctioning cruise control module.

3. How can I diagnose the Cruise Control Set/Coast Switch 2 Circuit issue indicated by OBDII code P155B in my 2016 Chevrolet Silverado?

- You can diagnose this issue by checking the cruise control system components for any visible damage, using a diagnostic scanner to read the trouble code, and performing a thorough inspection of the wiring and connections.

4. Is it safe to continue driving my 2016 Chevrolet Silverado with the OBDII code P155B related to the Cruise Control Set/Coast Switch 2 Circuit?

- It is generally safe to drive the vehicle, but it is recommended to address the issue promptly to avoid potential loss of cruise control functionality and ensure the overall safety of the vehicle.

5. Can I repair the Cruise Control Set/Coast Switch 2 Circuit problem associated with OBDII code P155B in my 2016 Chevrolet Silverado myself?

- While some DIY enthusiasts may attempt to troubleshoot and repair the issue, it is advisable to seek professional help, especially if you are not experienced in dealing with automotive electrical systems.

6. Are there any simple tips for fixing the Cruise Control Set/Coast Switch 2 Circuit issue indicated by OBDII code P155B in a 2016 Chevrolet Silverado?

- Basic tips include checking for loose or damaged wiring, ensuring all connectors are securely attached, and resetting the vehicle's computer system by disconnecting the battery for a few minutes.

7. How much does it typically cost to repair the Cruise Control Set/Coast Switch 2 Circuit problem linked to OBDII code P155B in a 2016 Chevrolet Silverado?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing components like the cruise control switch, repairing wiring, or addressing any underlying module malfunctions.

8. Can the OBDII code P155B related to the Cruise Control Set/Coast Switch 2 Circuit in a 2016 Chevrolet Silverado cause other issues with the vehicle's performance?

- While this code primarily affects the cruise control system, unresolved issues could potentially impact the vehicle's overall performance and fuel efficiency over time if left unaddressed.

9. Will resetting the OBDII system clear the Cruise Control Set/Coast Switch 2 Circuit fault code P155B in my 2016 Chevrolet Silverado?

- Resetting the OBDII system may temporarily clear the fault code, but if the underlying issue causing the code is not addressed, the code is likely to reappear after driving the vehicle for a while.

10. How urgent is it to fix the Cruise Control Set/Coast Switch 2 Circuit issue signaled by OBDII code P155B in a 2016 Chevrolet Silverado?

- While it may not pose an immediate safety risk, it is advisable to address the problem promptly to restore full functionality to the cruise control system and prevent potential complications down the road.

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