AutoCodes – Generic – P2534

P2534 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 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.

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Code Popularity 36,706

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
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Code P2534 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 - Ignition On/Start Switch Circuit Low Voltage - AutoCodes.com — P2534 Code - Ignition On/Start Switch Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2534?

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?

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 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 code?

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

Need Help with the Code?

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

Information for Specific Makes

P2534 Buick — Ignition On/Start Switch Circuit Low Voltage
P2534 Cadillac — Ignition On/Start Switch Circuit Low Voltage
P2534 Chevrolet — Ignition On/Start Switch Circuit Low Voltage
P2534 Dodge — Ignition On/Start Switch Circuit Low Voltage
P2534 GMC — Ignition On/Start Switch Circuit Low Voltage
P2534 Pontiac — Ignition On/Start Switch Circuit Low Voltage
P2534 Saturn — Ignition On/Start Switch Circuit Low Voltage

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 Code

1. What are the common symptoms of OBDII code P2534?

- Common symptoms include difficulty starting the vehicle, intermittent or no start condition, and illumination of the Check Engine Light.

2. What can cause the Ignition On/Start Switch Circuit Low Voltage code P2534?

- The code P2534 can be caused by a faulty ignition switch, damaged wiring or connectors in the ignition switch circuit, or a weak battery.

3. How can I diagnose the cause of OBDII code P2534?

- Diagnose the code by checking the battery voltage, inspecting the ignition switch and its wiring, and using a multimeter to test for continuity and voltage at various points in the circuit.

4. Can a weak battery cause the P2534 code to trigger?

- Yes, a weak or failing battery can cause low voltage in the ignition switch circuit and trigger the P2534 code.

5. What are some repair tips for addressing code P2534?

- Repair tips include checking and replacing a weak battery, ensuring proper connection and voltage in the ignition switch circuit, and repairing or replacing damaged wiring or connectors.

6. Is it safe to continue driving with the P2534 code present?

- It is not recommended to continue driving with the P2534 code present, as it can lead to potential starting issues or failure while driving.

7. Can a DIY enthusiast fix the P2534 code at home?

- Depending on the skills and tools available, DIY enthusiasts may be able to fix the P2534 code at home by following proper diagnostic procedures and repairing or replacing faulty components.

8. Will resetting the trouble codes make the P2534 code disappear permanently?

- Resetting the trouble codes may temporarily clear the P2534 code, but if the underlying issue is not addressed, the code is likely to reappear once the problem resurfaces.

9. How much does it typically cost to repair OBDII code P2534?

- The cost of repairing the P2534 code can vary depending on the cause of the issue, but it may involve expenses for parts replacement, labor, and diagnostic services.

10. Can a dealership or auto repair shop help diagnose and repair the P2534 code?

- Yes, a dealership or auto repair shop with experience in diagnosing and repairing automotive electrical issues can help address the P2534 code effectively.