AutoCodes – Cadillac – P2535 Cadillac

P2535 Cadillac Code - Ignition On/Start Switch Circuit High 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: P2535 Cadillac indicates Ignition On/Start Switch Circuit High 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 6,196

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 P2535 Cadillac 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 greater than 6 V or greater on the ignition voltage circuit, with the ignition turned OFF.

OBDII Code P2535 Cadillac - Ignition On/Start Switch Circuit High Voltage - AutoCodes.com — P2535 Cadillac Code - Ignition On/Start Switch Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2535 Cadillac?

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 P2535 Cadillac?

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 P2535 Cadillac 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 P2535 Cadillac code?

Need more information on how to fix the P2535 Cadillac 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 P2535 Cadillac Code

1. What are the common symptoms of OBDII code P2535 in a Cadillac?

- Common symptoms include difficulty starting the vehicle, engine stalling, and potential issues with the vehicle's electrical system.

2. What does the OBDII code P2535 Cadillac mean?

- OBDII code P2535 indicates a problem with the ignition on/start switch circuit, specifically detecting a high voltage condition.

3. What are the possible causes of OBDII code P2535 in a Cadillac?

- Possible causes include a faulty ignition switch, wiring issues in the ignition switch circuit, or a malfunctioning engine control module (ECM).

4. How can I diagnose the cause of OBDII code P2535 in my Cadillac?

- To diagnose this code, you may need to perform a thorough inspection of the ignition switch, check the wiring for any damage or loose connections, and potentially use a multimeter to test the circuit for high voltage.

5. Can driving with OBDII code P2535 present cause further damage to my Cadillac?

- Driving with this code present can potentially lead to further electrical issues or problems starting the vehicle, so it is recommended to address the issue promptly.

6. How can I repair OBDII code P2535 in my Cadillac?

- Repair options may include replacing the ignition switch, repairing any damaged wiring, or reprogramming the ECM if necessary.

7. Is it safe to continue driving my Cadillac with OBDII code P2535?

- While the vehicle may still be operational with this code present, it is not recommended to continue driving without addressing the underlying issue to prevent potential safety hazards or further damage.

8. Can I reset OBDII code P2535 in my Cadillac using an OBDII scanner?

- Yes, you can reset the code using an OBDII scanner, but it is important to address the root cause of the issue to prevent the code from reoccurring.

9. Will disconnecting the battery reset OBDII code P2535 in my Cadillac?

- Disconnecting the battery may reset the code temporarily, but it is not a permanent solution. The underlying issue should still be diagnosed and repaired.

10. How much can I expect to pay for repairs related to OBDII code P2535 in a Cadillac?

- Repair costs can vary depending on the exact cause of the issue, but expect to pay anywhere from $100 to $500 for parts and labor, excluding diagnostic fees.