B12C5 Acura Code - Engine Start/Stop Switch Failure
Quick Answer
This Push Button Ignition Switch is a single pole momentary design with position indicator LEDs controlled by the Keyless access control unit. Common causes include Faulty Start/Stop Switch, Start/Stop Switch harness is open or shorted, Start/Stop 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
- B12C5 Acura indicates Engine Start/Stop Switch Failure.
- Common causes
- Common causes include Faulty Start/Stop Switch, Start/Stop Switch harness is open or shorted, Start/Stop 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.
Code B12C5 Acura Description
Once the Keyless access control unit detects the presence of a registered key fob and the brake pedal is not depressed, each time the button is pushed the Body Control Module will cycle through Accessories, On and Off modes. The Body Control Module will also illuminate the appropriate position indicator LED.
If the brake pedal is depressed, the shift lever is in Park and the button is pushed, the Keyless access control unit will start the engine.
What are the Possible Causes of the DTC B12C5 Acura?
- Faulty Start/Stop Switch
- Start/Stop Switch harness is open or shorted
- Start/Stop Switch circuit poor electrical connection
How to Fix the DTC B12C5 Acura?
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 B12C5 Acura 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.
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Frequently Asked Questions about B12C5 Acura Code
1. What are the common symptoms of OBDII code B12C5 in an Acura related to Engine Start/Stop Switch Failure?
The common symptoms include the engine not starting or shutting off unexpectedly, the inability to turn the engine on using the start/stop button, and potential warning lights on the dashboard.
2. What can cause the Engine Start/Stop Switch Failure OBDII code B12C5 in an Acura?
Possible causes of this code may include a malfunctioning start/stop switch, wiring issues, a faulty control module, or a weak battery.
3. How can I diagnose the Engine Start/Stop Switch Failure OBDII code B12C5 in my Acura?
To diagnose this issue, you can use an OBDII scanner to retrieve the specific code, inspect the start/stop switch for physical damage, check the battery voltage, and perform a thorough inspection of the wiring connections.
4. Is it safe to continue driving my Acura with the Engine Start/Stop Switch Failure OBDII code B12C5?
It is not recommended to drive your Acura with this issue as it can lead to potential safety hazards and further damage to the vehicle. It is best to address the problem promptly.
5. Can I repair the Engine Start/Stop Switch Failure OBDII code B12C5 in my Acura myself?
While some basic troubleshooting steps can be performed by DIY enthusiasts, diagnosing and repairing this issue may require advanced automotive knowledge and specialized tools. It is advisable to seek professional help for an accurate diagnosis and repair.
6. How much does it typically cost to fix the Engine Start/Stop Switch Failure OBDII code B12C5 in an Acura?
The cost of repairing this issue can vary depending on the root cause of the problem, parts needed for replacement, and labor charges. It is recommended to obtain quotes from reputable auto repair shops for an accurate estimate.
7. Can a weak battery cause the Engine Start/Stop Switch Failure OBDII code B12C5 in an Acura?
Yes, a weak battery can potentially trigger this code as it may not provide sufficient power for the start/stop system to function properly. Ensuring the battery is in good condition is an important step in troubleshooting this issue.
8. Are there any preventive measures to avoid encountering the Engine Start/Stop Switch Failure OBDII code B12C5 in my Acura?
Regularly inspecting the start/stop switch, maintaining the battery in optimal condition, and addressing any electrical issues promptly can help prevent the occurrence of this code in your Acura.
9. Will resetting the OBDII code B12C5 related to Engine Start/Stop Switch Failure make it go away permanently?
Resetting the code may temporarily clear the warning light, but if the underlying issue causing the code is not addressed, it is likely to reappear. It is crucial to diagnose and fix the root cause of the problem to prevent further issues.
10. Can the Engine Start/Stop Switch Failure OBDII code B12C5 affect other systems or components in my Acura?
While the code specifically relates to the start/stop switch, issues with this system can impact the overall starting and stopping functions of the vehicle. It is important to address this code promptly to avoid potential complications with other systems.
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