AutoCodes – Chevrolet – P056C Chevrolet

P056C Chevrolet Code - Cruise Control Cancel Switch 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: P056C Chevrolet indicates Cruise Control Cancel Switch 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,833

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P056C 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 BCM monitors the cruise control switch. The BCM sets the OBDII code when the cruise control switch is not to factory specifications. The BCM detects an invalid voltage signal on the cruise control switch signal circuit for greater than 2 seconds and sends a serial data message to the ECM. The ECM sets the Diagnostic Trouble Code (DTC) when the message is received.

OBDII Code P056C Chevrolet - Cruise Control Cancel Switch Circuit - AutoCodes.com — P056C Chevrolet Code - Cruise Control Cancel Switch Circuit

What does this mean?

What are the Possible Causes of the DTC P056C 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 P056C 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 P056C 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 P056C Chevrolet code?

Need more information on how to fix the P056C Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P056C Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P056C 2014 Chevrolet Silverado — Cruise Control Cancel Switch Circuit
P056C 2015 Chevrolet Silverado — Cruise Control Cancel Switch Circuit
P056C 2016 Chevrolet Silverado — Cruise Control Cancel Switch Circuit
P056C 2017 Chevrolet Silverado — Cruise Control Cancel Switch Circuit
P056C 2018 Chevrolet Silverado — Cruise Control Cancel Switch Circuit

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 P056C Chevrolet Code

1. What are common symptoms of OBDII code P056C in a Chevrolet related to the Cruise Control Cancel Switch Circuit?

The common symptoms include non-functional cruise control, illuminated Check Engine Light, and difficulty engaging or disengaging the cruise control system.

2. What could cause OBDII code P056C to trigger in a Chevrolet?

Possible causes include a faulty cruise control cancel switch, damaged wiring or connectors in the circuit, or a malfunctioning cruise control module.

3. How can I diagnose the Cruise Control Cancel Switch Circuit issue causing OBDII code P056C in my Chevrolet?

You can start by checking the condition of the cancel switch, inspecting the wiring for any visible damage, and using a diagnostic scan tool to identify the specific area of the circuit with the fault.

4. Can I still drive my Chevrolet with OBDII code P056C present?

While it may be safe to drive your vehicle with this code, it is recommended to address the underlying issue promptly to prevent any potential long-term damage to the cruise control system.

5. Is it possible to repair OBDII code P056C in a Chevrolet on my own?

Depending on your skill level and access to tools, you may be able to repair this issue yourself by replacing the faulty cruise control cancel switch or repairing any damaged wiring in the circuit.

6. Will resetting the OBDII code P056C in my Chevrolet make the issue go away?

Resetting the code may temporarily turn off the Check Engine Light, but if the underlying problem with the Cruise Control Cancel Switch Circuit is not resolved, the code is likely to reappear.

7. How much does it typically cost to fix OBDII code P056C related to the Cruise Control Cancel Switch Circuit in a Chevrolet?

The cost of repair can vary depending on the exact cause of the issue, but it may involve expenses for parts and labor, ranging from around $100 to $300 or more.

8. Can a malfunctioning cruise control cancel switch impact the overall performance of my Chevrolet?

While the impact may be limited to the cruise control system, a faulty cancel switch could potentially affect other electrical functions in the vehicle if left unaddressed for an extended period.

9. Are there any preventive measures to avoid encountering OBDII code P056C in a Chevrolet in the future?

Regularly inspecting the cruise control components, including the cancel switch, and addressing any issues promptly can help prevent the recurrence of this OBDII code in your Chevrolet.

10. Will OBDII code P056C cause my Chevrolet to fail an emissions test?

While the code itself may not directly affect emissions, it is still recommended to address and resolve the issue to ensure the overall health and functionality of your vehicle's systems.