AutoCodes – GMC – P2534 2018 GMC Sierra

P2534 2018 GMC Sierra Code - Ignition On/Start Switch Circuit Low Voltage

Quick Answer

The Body Control Module (BCM) controls the ignition main relay through the control circuit by applying a voltage to the circuit. Common causes include Faulty Ignition On/Start Switch, Ignition On/Start Switch harness is open or shorted, Ignition On/Start 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: P2534 2018 GMC Sierra indicates Ignition On/Start Switch Circuit Low Voltage.
Common causes: Common causes include Faulty Ignition On/Start Switch, Ignition On/Start Switch harness is open or shorted, Ignition On/Start 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 290

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 Aug 12, 2022

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 P2534 2018 GMC Sierra Description

The Body Control Module (BCM) controls the ignition main relay through the control circuit by applying a voltage to the circuit. The control module samples the system voltage on the Ignition 1 voltage circuit from the ignition main relay every 0.1 s.
The Diagnostic Trouble Code (DTC) will be set when the control module detects 6 V or less on the ignition voltage circuit, with the ignition, turned ON.

OBDII Code P2534 2018 GMC Sierra - Ignition On/Start Switch Circuit Low Voltage - AutoCodes.com — P2534 2018 GMC Sierra Code - Ignition On/Start Switch Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2534 2018 GMC Sierra?

Faulty Ignition On/Start Switch
Ignition On/Start Switch harness is open or shorted
Ignition On/Start Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC P2534 2018 GMC Sierra?

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 P2534 2018 GMC Sierra 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 P2534 2018 GMC Sierra code?

Need more information on how to fix the P2534 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2534 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 P2534 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code P2534 in a 2018 GMC Sierra?

- Common symptoms include difficulty starting the vehicle, intermittent stalling, and loss of power while driving.

2. What does the OBDII code P2534 indicate in a 2018 GMC Sierra?

- The code P2534 indicates a low voltage condition in the ignition on/start switch circuit.

3. What are the possible causes of OBDII code P2534 in a 2018 GMC Sierra?

- Possible causes include a faulty ignition switch, damaged wiring or connectors in the circuit, or a problem with the ignition switch position sensor.

4. How can I diagnose the OBDII code P2534 in my 2018 GMC Sierra?

- Diagnosing the code may involve visually inspecting the wiring and connectors, testing the ignition switch, and checking for proper voltage in the circuit.

5. Can I continue driving my 2018 GMC Sierra with OBDII code P2534?

- It is not recommended to continue driving the vehicle with this code, as it can lead to potential safety hazards and further damage.

6. How can I repair OBDII code P2534 in my 2018 GMC Sierra?

- Repairing the issue may involve replacing the faulty ignition switch, repairing damaged wiring or connectors, or recalibrating the ignition switch position sensor.

7. Will resetting the OBDII code P2534 in my 2018 GMC Sierra fix the issue?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the low voltage condition in the ignition on/start switch circuit.

8. Is OBDII code P2534 a common issue in 2018 GMC Sierra vehicles?

- While not extremely common, the code P2534 can occur in 2018 GMC Sierra vehicles due to various factors such as wear and tear or electrical issues.

9. Can extreme weather conditions affect the occurrence of OBDII code P2534 in a 2018 GMC Sierra?

- Extreme weather conditions, particularly temperature fluctuations, can potentially exacerbate electrical issues leading to the triggering of code P2534 in a 2018 GMC Sierra.

10. Should I seek professional help to address OBDII code P2534 in my 2018 GMC Sierra?

- It is advisable to seek the expertise of a qualified mechanic or technician to properly diagnose and repair OBDII code P2534 in a 2018 GMC Sierra to ensure the issue is resolved effectively and safely.