B12C5 Honda 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 Honda 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 Honda 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 Honda?
- 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 Honda?
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 Honda 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 Honda Code
1. What are the common symptoms of OBDII code B12C5 in a Honda related to Engine Start/Stop Switch Failure?
- Common symptoms include issues with starting or stopping the engine, the engine not turning over, and the inability to switch the engine on or off.
2. What causes the Engine Start/Stop Switch Failure indicated by OBDII code B12C5 in a Honda?
- The code B12C5 typically points to a malfunction in the engine start/stop switch itself, a wiring issue, or a faulty connection in the circuit.
3. How can I diagnose the Engine Start/Stop Switch Failure problem associated with OBDII code B12C5 in my Honda?
- Diagnosis involves checking the condition of the start/stop switch, inspecting the wiring for any damage, and using a diagnostic scanner to read and clear the code.
4. Can I still drive my Honda if the Engine Start/Stop Switch Failure code B12C5 is present?
- It is not recommended to drive the vehicle with this issue, as it may lead to starting or stopping problems and potential safety concerns.
5. What are some repair tips for fixing the Engine Start/Stop Switch Failure related to OBDII code B12C5 in a Honda?
- Repair tips include replacing the faulty start/stop switch, repairing any damaged wiring, ensuring proper connections, and resetting the code with a diagnostic tool.
6. Is it possible to reset the OBDII code B12C5 in my Honda without fixing the Engine Start/Stop Switch Failure issue?
- While you can reset the code temporarily, it is important to address the underlying problem to prevent further issues with starting and stopping the engine.
7. How much does it typically cost to repair the Engine Start/Stop Switch Failure issue linked to OBDII code B12C5 in a Honda?
- The cost of repair can vary depending on the extent of the problem, but it may involve labor costs for diagnosis and replacement parts for the start/stop switch or wiring.
8. Are there any preventive measures to avoid encountering the OBDII code B12C5 for Engine Start/Stop Switch Failure in a Honda?
- Regular maintenance checks, prompt repair of any electrical issues, and using reliable components can help prevent the occurrence of this code in the future.
9. Can a DIY enthusiast with basic automotive knowledge fix the Engine Start/Stop Switch Failure problem indicated by OBDII code B12C5 in a Honda?
- While some basic repairs like checking connections or replacing the switch can be done by a DIY enthusiast, complex wiring issues may require professional assistance.
10. How long does it take to repair the Engine Start/Stop Switch Failure related to OBDII code B12C5 in a Honda?
- The repair time can vary depending on the exact cause of the issue, but it typically takes a few hours to diagnose, replace components, and clear the code.
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