AutoCodes – Chevrolet – P2536 2018 Chevrolet Silverado

P2536 2018 Chevrolet Silverado Code - Ignition Accessory Switch Circuit

Quick Answer

The control module continuously monitors the voltage on the Ignition Accessory/Run circuit from the Body Control Module (BCM). Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module 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: P2536 2018 Chevrolet Silverado indicates Ignition Accessory Switch Circuit.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module 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 631

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 21, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2536 2018 Chevrolet Silverado Description

The control module continuously monitors the voltage on the Ignition Accessory/Run circuit from the Body Control Module (BCM). When the ignition is in the ACCESSORY or RUN position, the BCM sends a 12 V wake-up signal to the control module. This wake-up signal allows the control module to power up and start functioning before the engine is started. The Diagnostic Trouble Code (DTC) will be set when the control module detects the Ignition Accessory/Run circuit is less than 6 V for 1 min.

OBDII Code P2536 2018 Chevrolet Silverado - Ignition Accessory Switch Circuit - AutoCodes.com — P2536 2018 Chevrolet Silverado Code - Ignition Accessory Switch Circuit

What does this mean?

What are the Possible Causes of the DTC P2536 2018 Chevrolet Silverado?

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

How to Fix the DTC P2536 2018 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 P2536 2018 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 P2536 2018 Chevrolet Silverado code?

Need more information on how to fix the P2536 2018 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 P2536 2018 Chevrolet Silverado Code

1. What does the OBDII code P2536 mean for a 2018 Chevrolet Silverado?

P2536 indicates an issue with the ignition accessory switch circuit, which monitors the ignition switch's accessory position to ensure proper electrical operation.

2. What are the common symptoms of code P2536 in a 2018 Chevrolet Silverado?

Symptoms may include the engine not starting or stalling, accessories like the radio or power windows not functioning, or a check engine light illuminating.

3. What causes the P2536 code to appear in a Chevrolet Silverado?

Common causes include a faulty ignition switch, damaged wiring or connectors in the ignition circuit, or a malfunctioning Body Control Module (BCM).

4. Can a bad battery cause the P2536 code in a 2018 Silverado?

Yes, a weak or failing battery can cause voltage irregularities that may trigger this code, as the ignition circuit relies on stable electrical power.

5. How do you diagnose the P2536 code in a Chevrolet Silverado?

Diagnosis involves using a scan tool to confirm the code, visually inspecting the ignition switch and wiring, testing circuit continuity, and checking for proper voltage at the accessory switch.

6. Can I drive my 2018 Silverado with the P2536 code?

While the truck may still be drivable, itâ€™s not recommended, as unresolved ignition circuit issues could lead to stalling or further electrical problems.

7. How much does it cost to repair the P2536 code on a 2018 Chevrolet Silverado?

Repair costs can range from $100 to $400 depending on whether the ignition switch, wiring, or BCM needs to be repaired or replaced.

8. Can I fix the P2536 code on my Silverado myself?

If youâ€™re comfortable working with electrical components, you can inspect connectors and wiring for damage. However, replacing the ignition switch or diagnosing the BCM may require professional assistance.

9. Could a blown fuse cause the P2536 code in a Silverado?

Yes, a blown fuse in the ignition circuit could disrupt power flow and trigger this code. Check the fuse box for any blown fuses.

10. Does the ignition accessory switch circuit issue affect other systems in the Silverado?

Yes, since the ignition accessory switch powers various electrical systems, a fault in this circuit can impact accessories like lights, radio, or HVAC operation.