AutoCodes – Chevrolet – P056C 2016 Chevrolet Silverado

P056C 2016 Chevrolet Silverado 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 2016 Chevrolet Silverado 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.

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Code Popularity 262

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 P056C 2016 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. 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 2016 Chevrolet Silverado - Cruise Control Cancel Switch Circuit - AutoCodes.com — P056C 2016 Chevrolet Silverado Code - Cruise Control Cancel Switch Circuit

What does this mean?

What are the Possible Causes of the DTC P056C 2016 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 P056C 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 P056C 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 P056C 2016 Chevrolet Silverado code?

Need more information on how to fix the P056C 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P056C 2016 Chevrolet Silverado Code

1. What does the OBDII code P056C mean on a 2016 Chevrolet Silverado?

P056C indicates an issue with the cruise control cancel switch circuit, which may prevent the cruise control system from operating correctly.

2. What are the symptoms of code P056C on a 2016 Chevrolet Silverado?

Common symptoms include the cruise control not engaging, intermittent disengagement of cruise control, or a check engine light appearing on the dashboard.

3. What causes the P056C code to appear?

Possible causes include a faulty cruise control cancel switch, damaged wiring or connectors in the switch circuit, or a malfunctioning brake pedal position sensor.

4. Can I still drive my Silverado with a P056C code?

Yes, you can still drive the vehicle, but the cruise control system may not function, which could affect convenience during long drives.

5. How do I diagnose the P056C code on a 2016 Chevrolet Silverado?

Diagnosis involves using a scan tool to check for related codes, inspecting the cruise control cancel switch, testing the wiring and connectors, and verifying the brake pedal position sensor's operation.

6. What repairs may fix the P056C code?

Repairs may include replacing the cruise control cancel switch, repairing damaged wires or connectors, or recalibrating or replacing the brake pedal position sensor.

7. How much does it cost to fix the P056C code?

Repair costs vary but typically range from $100 to $300, depending on whether the issue is with the switch, wiring, or sensor.

8. Can I reset the P056C code without repairs?

You can clear the code with a scan tool, but if the underlying issue isnâ€™t fixed, the code will likely return.

9. Is the P056C code related to the brake system?

Yes, the code may involve the brake pedal position sensor, as it works in conjunction with the cruise control cancel switch to disengage cruise control when the brakes are applied.

10. How can I prevent the P056C code from occurring?

Regularly inspect and maintain the cruise control system components, including the cancel switch, wiring, and brake pedal sensors, to ensure proper functionality.