P15A3 GMC Code - Stop/Start Select Switch Circuit Signal Message Counter Incorrect
Quick Answer
The Engine Control Module (ECM) receives the Stop/Start switch speed signal via Control Area Network (CAN) from the Body Control Module (BCM). Common causes include Faulty Stop/Start Select Switch, Stop/Start Select Switch harness is open or shorted, Stop/Start Select 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
- P15A3 GMC indicates Stop/Start Select Switch Circuit Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Stop/Start Select Switch, Stop/Start Select Switch harness is open or shorted, Stop/Start Select 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 P15A3 GMC Description
What are the Possible Causes of the DTC P15A3 GMC?
- Faulty Stop/Start Select Switch
- Stop/Start Select Switch harness is open or shorted
- Stop/Start Select Switch circuit poor electrical connection
How to Fix the DTC P15A3 GMC?
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 P15A3 GMC 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 P15A3 GMC Code
1. What are the common symptoms of OBDII code P15A3 in a GMC vehicle?
- Common symptoms include the engine stop/start system not functioning properly, warning lights on the dashboard, and potential issues with the vehicle's battery.
2. What can cause the OBDII code P15A3 to appear in a GMC car?
- The code P15A3 typically indicates a problem with the stop/start select switch circuit signal message counter, which can be caused by a faulty switch, wiring issues, or a malfunctioning control module.
3. How serious is the OBDII code P15A3 in a GMC vehicle?
- While the code itself may not cause immediate drivability issues, it can affect the functionality of the stop/start system and lead to increased fuel consumption or other related problems if left unresolved.
4. Can I continue driving my GMC with the OBDII code P15A3 present?
- It is generally safe to continue driving the vehicle with the code P15A3, but it is recommended to address the underlying issue as soon as possible to prevent potential complications.
5. How can I diagnose and repair the OBDII code P15A3 in my GMC car?
- Diagnosing and repairing the P15A3 code usually involves inspecting the stop/start select switch, checking the wiring connections, and testing the control module for proper functionality. Professional diagnostic tools may be needed for a thorough diagnosis.
6. Is it possible to reset the OBDII code P15A3 without fixing the underlying issue?
- While clearing the code temporarily may turn off the warning lights, the problem will likely reoccur if the root cause is not addressed. It is recommended to diagnose and fix the issue to prevent further complications.
7. How much does it typically cost to repair the OBDII code P15A3 in a GMC vehicle?
- The cost of repairing the P15A3 code can vary depending on the specific cause of the issue, but it may involve replacing the stop/start select switch, repairing wiring, or reprogramming the control module. Costs can range from a few hundred to over a thousand dollars.
8. Can a DIY enthusiast fix the OBDII code P15A3 issue in a GMC car?
- While some DIY enthusiasts may be able to diagnose and repair simple wiring issues or switch replacements related to the P15A3 code, more complex problems with the control module or system programming may require professional help.
9. Will the OBDII code P15A3 cause my GMC vehicle to fail an emissions test?
- The P15A3 code itself may not directly cause a vehicle to fail an emissions test, but it is recommended to resolve any stored codes before undergoing emissions testing to ensure proper functionality and compliance.
10. How can I prevent the OBDII code P15A3 from reoccurring in my GMC car?
- To prevent the P15A3 code from reoccurring, regular maintenance and inspections of the stop/start system, switch, and related components are recommended. Addressing any issues promptly can help prevent future occurrences of the code.
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