AutoCodes – Chevrolet – P155B 2015 Chevrolet Silverado

P155B 2015 Chevrolet Silverado Code - Cruise Control Set/Coast Switch 2 Circuit

Quick Answer

The Cruise Control Switch is an input to the Body Control Module (BCM). Common causes include Faulty Cruise Control Switch, Cruise Control Switch harness is open or shorted, Cruise Control Switch 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: P155B 2015 Chevrolet Silverado indicates Cruise Control Set/Coast Switch 2 Circuit.
Common causes: Common causes include Faulty Cruise Control Switch, Cruise Control Switch harness is open or shorted, Cruise Control Switch 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.

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Code Popularity 333

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P155B 2015 Chevrolet Silverado Description

The Cruise Control Switch is an input to the Body Control Module (BCM). The BCM monitors the cruise control on/off, set/coast, resume/accelerate and cancel switches via the cruise control switch signal circuit in order to detect when the driver has requested to perform a cruise control function. The BCM detects a specific voltage signal on the cruise control switch signal circuit when a switch is applied. The Engine Control Module (ECM) receives the requested cruise control switch function from the BCM via a serial data message. The BCM monitors the cruise control switch. The BCM sets the OBDII code when the cruise control switch is not to factory specifications.

OBDII Code P155B 2015 Chevrolet Silverado - Cruise Control Set/Coast Switch 2 Circuit - AutoCodes.com — P155B 2015 Chevrolet Silverado Code - Cruise Control Set/Coast Switch 2 Circuit

What does this mean?

What are the Possible Causes of the DTC P155B 2015 Chevrolet Silverado?

Faulty Cruise Control Switch
Cruise Control Switch harness is open or shorted
Cruise Control Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC P155B 2015 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 P155B 2015 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 P155B 2015 Chevrolet Silverado code?

Need more information on how to fix the P155B 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 2015 Chevrolet Silverado Code

1. What does OBDII code P155B on a 2015 Chevrolet Silverado indicate?

This code, titled "Cruise Control Set/Coast Switch 2 Circuit," typically points to an issue with the cruise control system's set/coast switch circuit.

2. What are common symptoms of OBDII code P155B in a 2015 Chevrolet Silverado?

Common symptoms include the cruise control system not engaging, the cruise control not maintaining speed properly, or the cruise control system being inoperative altogether.

3. What are possible causes of OBDII code P155B in a 2015 Chevrolet Silverado?

Potential causes may include a faulty cruise control set/coast switch, damaged wiring or connectors in the cruise control system, or a malfunction in the cruise control module.

4. How can I diagnose OBDII code P155B on my 2015 Chevrolet Silverado?

Diagnosing this code typically involves checking the cruise control set/coast switch for proper operation, inspecting the wiring and connectors for any damage, and using a scan tool to assess the cruise control module's functionality.

5. Can I still drive my 2015 Chevrolet Silverado with OBDII code P155B present?

While the vehicle should still be safe to drive with this code, it's recommended to address the cruise control issue promptly to ensure optimal functionality and avoid any potential inconvenience.

6. How can I repair OBDII code P155B on my 2015 Chevrolet Silverado?

Repairing this code may involve replacing the cruise control set/coast switch if faulty, repairing any damaged wiring or connectors, or reprogramming the cruise control module as necessary.

7. Is it possible to reset OBDII code P155B on a 2015 Chevrolet Silverado without professional help?

While you can clear the code with an OBDII scanner, it's crucial to diagnose and address the underlying issue causing the code to prevent it from reoccurring.

8. Will OBDII code P155B on a 2015 Chevrolet Silverado affect the vehicle's performance?

This code typically won't affect the vehicle's overall performance but may impact the functionality of the cruise control system, leading to potential inconvenience for the driver.

9. How common is OBDII code P155B in 2015 Chevrolet Silverado vehicles?

While not as common as some other OBDII codes, P155B can still occur in 2015 Chevrolet Silverado models due to various factors affecting the cruise control system.

10. Can I prevent OBDII code P155B from appearing on my 2015 Chevrolet Silverado?

Regular maintenance checks on the cruise control system, prompt repair of any cruise control issues, and ensuring proper handling of the vehicle can help reduce the likelihood of encountering this particular OBDII code.