P0703 2016 Chevrolet Silverado Code - Brake Switch Signal Message Counter Incorrect
Quick Answer
The P0703 diagnostic trouble code for a 2016 Chevrolet Silverado indicates that the Brake Switch Signal Message Counter is Incorrect. Common causes include Faulty brake switch, Damaged wiring or connectors in the brake switch circuit, Issues with the control module. 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
- P0703 2016 Chevrolet Silverado indicates Brake Switch Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty brake switch, Damaged wiring or connectors in the brake switch circuit, Issues with the control module.
- 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 P0703 2016 Chevrolet Silverado Description
The P0703 diagnostic trouble code for a 2016 Chevrolet Silverado indicates that the Brake Switch Signal Message Counter is Incorrect. This means that the signal being sent from the brake switch to the vehicle's control module does not match the expected number of messages, causing a discrepancy. The brake switch is a crucial component in the vehicle's braking system, as it sends a signal to the control module to indicate when the brake pedal is being pressed. This information is used by the vehicle's systems to adjust various functions such as cruise control, traction control, and transmission shifting.
Common Causes of P0703 2016 Chevrolet Silverado
- Faulty brake switch
- Damaged wiring or connectors in the brake switch circuit
- Issues with the control module
- Corrosion in the brake switch circuit
- Poor electrical connection
Symptoms of P0703 2016 Chevrolet Silverado
- Illumination of the Check Engine Light
- Erratic behavior of cruise control system
- Inconsistent transmission shifting
- Difficulty disengaging the vehicle from park
- ABS or traction control system malfunctions
How to Fix P0703 2016 Chevrolet Silverado
- Begin by diagnosing the issue using a scan tool to verify the P0703 code and identify the exact cause of the problem.
- Inspect the brake switch, wiring, and connectors for any visible damage or corrosion. Replace any faulty components.
- Test the brake switch signal using a multimeter to ensure it is functioning correctly.
- Reset the vehicle's control module to clear the code and see if the issue persists.
- If the problem persists, further diagnostics may be required to identify any underlying issues with the control module or other related components.
Cost to Fix P0703 2016 Chevrolet Silverado
The cost of repairing a P0703 code on a 2016 Chevrolet Silverado can vary depending on the exact cause of the issue and the labor rates in your area. In general, the cost of parts for a new brake switch and any necessary wiring or connectors can range from $50 to $150. Labor costs at most auto repair shops typically range from $80 to $150 per hour, with the total repair time estimated at around 1-2 hours. Therefore, the total repair cost could range from $130 to $450, including parts and labor. It's recommended to contact local auto repair shops for more accurate estimates based on your specific situation.
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Frequently Asked Questions about P0703 2016 Chevrolet Silverado Code
1. What does OBDII code P0703 mean for a 2016 Chevrolet Silverado?
Code P0703 indicates that the Powertrain Control Module (PCM) has detected an issue with the brake switch signal, specifically inconsistent or incorrect message counts.
2. What are the common symptoms of code P0703 in a 2016 Chevrolet Silverado?
Symptoms may include the brake lights not functioning properly, transmission shifting issues, the cruise control not working, or the check engine light illuminating.
3. What causes code P0703 to be triggered on a 2016 Chevrolet Silverado?
Common causes include a faulty brake light switch, damaged wiring or connectors in the brake switch circuit, or issues with the PCM or related software.
4. Can I drive my 2016 Chevrolet Silverado with code P0703 active?
While the vehicle may still be drivable, it is not recommended as it could result in safety issues, such as non-functional brake lights or cruise control problems.
5. How do I diagnose code P0703 on a 2016 Chevrolet Silverado?
Start by inspecting the brake light switch and its wiring for damage or loose connections. Use a scan tool to monitor brake switch signal data and test the switch for proper functionality.
6. How do I fix code P0703 on a 2016 Chevrolet Silverado?
Repairs may include replacing a faulty brake light switch, repairing damaged wiring or connectors, or updating/replacing the PCM if necessary.
7. Is the brake light switch the only part that can cause code P0703?
No, while the brake light switch is a common culprit, damaged wiring, connectors, or PCM software issues can also cause this code.
8. How much does it cost to fix code P0703 on a 2016 Chevrolet Silverado?
The repair cost depends on the issue. Replacing a brake light switch typically costs $50-$150, while PCM repairs or wiring fixes can be more expensive.
9. Can code P0703 cause transmission problems in a 2016 Chevrolet Silverado?
Yes, a faulty brake light signal can confuse the transmission control system, potentially causing erratic or delayed shifting.
10. Will clearing the code fix P0703 on a 2016 Chevrolet Silverado?
Clearing the code may temporarily turn off the check engine light, but the underlying issue must be addressed to prevent the code from returning.
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