P162C 2017 GMC Sierra Code - Vehicle Speed Limiting/Warning Switch Circuit
Quick Answer
The P162C diagnostic trouble code (DTC) for the 2017 GMC Sierra relates to the Vehicle Speed Limiting/Warning Switch Circuit. Common causes include Faulty speed limiting/warning switch, Wiring or electrical issues in the circuit, Defective speed sensor. 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
- P162C 2017 GMC Sierra indicates Vehicle Speed Limiting/Warning Switch Circuit.
- Common causes
- Common causes include Faulty speed limiting/warning switch, Wiring or electrical issues in the circuit, Defective speed sensor.
- 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 P162C 2017 GMC Sierra Description
The P162C diagnostic trouble code (DTC) for the 2017 GMC Sierra relates to the Vehicle Speed Limiting/Warning Switch Circuit. This code indicates that there is a problem with the circuit responsible for controlling the vehicle's speed limiting or warning system. In modern vehicles, speed limiting systems are often used to cap the vehicle's speed to prevent the driver from exceeding a certain limit, while warning systems alert the driver when they are approaching a predetermined speed threshold. When this circuit malfunctions, it can lead to issues with the vehicle's speed control functions, potentially affecting the driver's ability to control the vehicle safely.
Common Causes of P162C 2017 GMC Sierra
- Faulty speed limiting/warning switch.
- Wiring or electrical issues in the circuit.
- Defective speed sensor.
- Issues with the vehicle's ECM (Engine Control Module).
- Corrosion or damage to connectors in the circuit.
Symptoms of P162C 2017 GMC Sierra
- Check engine light illuminated on the dashboard.
- Inability to set or control the vehicle's speed limit.
- Inaccurate speed readings on the dashboard.
- Speed warning system malfunctioning or not activating.
How to Fix P162C 2017 GMC Sierra
- Begin by using a diagnostic scanner to retrieve the specific details of the code and confirm the issue.
- Inspect the speed limiting/warning switch and its wiring for any visible damage or faults. Replace as necessary.
- Check the speed sensor and its wiring for proper functionality. Replace if defective.
- Inspect the ECM for any signs of damage or malfunction. Repair or replace as needed.
- Clear the DTC from the vehicle's computer and test the speed limiting/warning system to ensure proper functionality.
Cost to Fix P162C 2017 GMC Sierra
The cost of repairing the P162C code on a 2017 GMC Sierra can vary depending on the specific cause of the issue and the labor rates in your area. On average, the parts for this repair can range from $50 to $200, while the labor costs can range from $100 to $300. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's recommended to contact local shops for a more accurate estimate.
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Frequently Asked Questions about P162C 2017 GMC Sierra Code
1. What does OBDII code P162C mean on a 2017 GMC Sierra?
P162C indicates an issue with the Vehicle Speed Limiting/Warning Switch Circuit, which monitors and controls speed-related functions.
2. What are the symptoms of code P162C in a 2017 GMC Sierra?
Symptoms may include an illuminated check engine light, limited vehicle speed, or malfunctioning speed-related warning systems.
3. What causes the P162C code to appear?
Common causes include faulty wiring or connectors in the speed limiting circuit, a malfunctioning speed warning switch, or a failing vehicle control module.
4. Can a bad speed warning switch trigger code P162C?
Yes, a malfunctioning or damaged speed warning switch can cause this code to appear.
5. How do I diagnose code P162C in my GMC Sierra?
Start by inspecting the wiring and connectors for damage or corrosion, then test the speed warning switch and related circuits using a multimeter.
6. Is it safe to drive with the P162C code active?
Driving may be possible, but the vehicle’s speed may be limited, and certain safety systems may not function correctly, so it’s best to address the issue promptly.
7. How do I fix the P162C code on a 2017 GMC Sierra?
Repairs may involve replacing damaged wiring, repairing the speed warning switch, or reprogramming or replacing the vehicle control module.
8. Can a software update fix the P162C code?
In some cases, a software update to the vehicle’s control module may resolve the issue if it’s caused by a programming error.
9. Will clearing the code fix the P162C problem?
Clearing the code may temporarily turn off the check engine light, but the root cause must be repaired to prevent the code from returning.
10. How much does it cost to repair code P162C?
Repair costs vary depending on the root cause, ranging from $50 for a wiring fix to $500 or more for a module replacement.
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