AutoCodes – Chevrolet – P155A Chevrolet

P155A Chevrolet Code - Cruise Control Switch State Undetermined

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: P155A Chevrolet indicates Cruise Control Switch State Undetermined.
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 6,809

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 P155A Chevrolet 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 Diagnostic Trouble Code (DTC) will be set when the ECM is unable to determine the state of the cruise control switch.

OBDII Code P155A Chevrolet - Cruise Control Switch State Undetermined - AutoCodes.com — P155A Chevrolet Code - Cruise Control Switch State Undetermined

What does this mean?

What are the Possible Causes of the DTC P155A Chevrolet?

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 P155A Chevrolet?

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 P155A Chevrolet 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 P155A Chevrolet code?

Need more information on how to fix the P155A Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P155A Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P155A 2014 Chevrolet Silverado — Cruise Control Switch State Undetermined
P155A 2015 Chevrolet Silverado — Cruise Control Switch State Undetermined
P155A 2016 Chevrolet Silverado — Cruise Control Switch State Undetermined
P155A 2017 Chevrolet Silverado — Cruise Control Switch State Undetermined
P155A 2018 Chevrolet Silverado — Cruise Control Switch State Undetermined

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 P155A Chevrolet Code

1. What does OBDII code P155A in a Chevrolet mean?

The code P155A indicates that the Cruise Control Switch State is undetermined in the vehicle.

2. What are the common symptoms of OBDII code P155A in a Chevrolet?

Common symptoms include the cruise control system not functioning properly or being inoperable.

3. What could cause the OBDII code P155A to appear in a Chevrolet?

The code P155A may be triggered due to a faulty cruise control switch, wiring issues, or a problem with the cruise control module.

4. How can I diagnose the OBDII code P155A in my Chevrolet?

Diagnosing the code P155A may involve checking the cruise control switch for proper operation, inspecting the wiring for any visible damage, and testing the cruise control module for faults.

5. Is it safe to continue driving with the OBDII code P155A in a Chevrolet?

While the vehicle is generally safe to drive with this code, it is recommended to address the issue promptly to ensure the proper functioning of the cruise control system.

6. Can I repair the OBDII code P155A in my Chevrolet myself?

Depending on your automotive knowledge and skills, you may be able to address the issue yourself by checking the cruise control switch, wiring, and module for any obvious problems.

7. Should I reset the OBDII code P155A in my Chevrolet after making repairs?

After repairing the issue causing the code P155A, it is advisable to reset the code using an OBDII scanner to clear it from the vehicle's system.

8. Will the OBDII code P155A in a Chevrolet cause any other problems in the vehicle?

While the code itself may not cause major issues, it is essential to address it to ensure the proper functioning of the cruise control system and avoid any related problems.

9. How much does it typically cost to repair the OBDII code P155A in a Chevrolet?

The cost of repairing the code P155A can vary depending on the root cause of the issue, labor costs, and any parts that may need to be replaced.

10. Can the OBDII code P155A in a Chevrolet be a recurring problem?

If the underlying cause of the code P155A is not properly addressed, it may reappear in the future. Regular maintenance and timely repairs can help prevent recurrence.