AutoCodes – Generic – B097B

B097B Code - Power Mode Start Switch Circuit

Quick Answer

The Ignition Mode Switch has 2 LED's that indicate the vehicle power mode. Common causes include Faulty Ignition Mode Switch, Ignition Mode Switch harness is open or shorted, Ignition Mode 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: B097B indicates Power Mode Start Switch Circuit.
Common causes: Common causes include Faulty Ignition Mode Switch, Ignition Mode Switch harness is open or shorted, Ignition Mode 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 11,927

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 11, 2021

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B097B Description

The Ignition Mode Switch has 2 LED's that indicate the vehicle power mode. When the vehicle is in the off mode, both LED's will be off. Pressing the ignition mode switch button once (without the brake pedal applied), the vehicle enters the accessory mode and the amber LED (ACC) will illuminate. The accessory mode has a 5 minute timeout to reduce battery drain. Pressing the ignition mode switch button a second time (without the brake pedal applied), the vehicle enters the run/start mode (without the engine running) and the green LED (Run/Start) will illuminate. Pressing and holding the push button start switch for at least 5 seconds will place the vehicle in run/start mode (without the vehicle running) and the green LED (Run/Start) will illuminate. With the ignition off (with the brake pedal applied), pressing the ignition mode switch button once, the vehicle will enter run/start mode and the green LED (run/start) will illuminate. This will start the engine. Both LED's have the voltage supplied from the Body Control Module (BCM). The ignition mode switch sends the ignition mode switch status to the Passive Entry Passive Start Module (PEPS) and to the BCM. The PEPS module sends a redundant signal to the BCM with the ignition mode switch status.

OBDII Code B097B - Power Mode Start Switch Circuit - AutoCodes.com — B097B Code - Power Mode Start Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B097B?

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

How to Fix the DTC B097B?

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 does this mean?

Code Tech Notes

B097B 00: Power Mode Start Switch Circuit Malfunction
B097B 02: Power Mode Start Switch Circuit Short to Ground
B097B 04: Power Mode Start Switch Circuit Open
B097B 08: Power Mode Start Switch Circuit Performance - Signal Invalid
B097B 61: Power Mode Start Switch Circuit - Stuck

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B097B 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 B097B code?

Need more information on how to fix the B097B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B097B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B097B Buick — Power Mode Start Switch Circuit
B097B Cadillac — Power Mode Start Switch Circuit
B097B Chevrolet — Power Mode Start Switch Circuit
B097B GMC — Power Mode Start Switch Circuit

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 B097B Code

1. What are common symptoms of OBDII code B097B (Power Mode Start Switch Circuit)?

The common symptoms associated with OBDII code B097B include issues with starting the vehicle, difficulty switching between power modes, and illuminated warning lights on the dashboard.

2. What can cause OBDII code B097B to trigger?

The code B097B is typically triggered by a faulty power mode start switch, damaged wiring or connectors in the circuit, or a malfunctioning control module.

3. How can I diagnose the Power Mode Start Switch Circuit issue related to code B097B?

To diagnose the issue, you can use a diagnostic scanner to read the OBDII code B097B. Additionally, checking the power mode start switch for physical damage and testing the circuit for continuity can help pinpoint the problem.

4. Are there any simple repairs I can try to fix OBDII code B097B?

Simple repairs for OBDII code B097B may include replacing the power mode start switch, repairing damaged wiring or connectors, and resetting the control module after fixing any issues.

5. Can a DIY enthusiast resolve OBDII code B097B at home?

Depending on the level of automotive expertise, a DIY enthusiast may be able to address OBDII code B097B by replacing the power mode start switch or repairing damaged wiring. However, complex issues may require professional diagnosis and repair.

6. Will driving with OBDII code B097B cause further damage to the vehicle?

Continuing to drive with OBDII code B097B may lead to issues with starting the vehicle and potentially cause damage to other components in the power mode start switch circuit. It is advisable to address the problem promptly.

7. How much does it typically cost to repair OBDII code B097B?

The cost of repairing OBDII code B097B can vary depending on the underlying issue, labor rates, and the cost of replacement parts. It is recommended to obtain quotes from reputable automotive repair shops for an accurate estimate.

8. Can OBDII code B097B be a false alarm?

While OBDII codes like B097B are usually triggered by specific issues in the vehicle's systems, false alarms can occur due to temporary glitches or sensor malfunctions. It is recommended to diagnose the problem to confirm the cause.

9. Are there any preventive maintenance tips to avoid OBDII code B097B in the future?

To prevent OBDII code B097B, it is advisable to regularly inspect the power mode start switch, check for any signs of wear or damage in the circuit, and address any electrical issues promptly to maintain the vehicle's overall health.

10. Can a disconnected or faulty power mode start switch cause OBDII code B097B?

Yes, a disconnected or faulty power mode start switch is a common cause of OBDII code B097B. Ensuring the switch is properly connected and functioning correctly can help prevent the code from triggering.