P0873 2014 GMC Sierra Code - Transmission Fluid Pressure Switch 3 Circuit High Voltage
Quick Answer
The P0873 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the Transmission Fluid Pressure Switch 3 Circuit High Voltage. Common causes include Faulty transmission fluid pressure switch, Damaged wiring or connectors in circuit 3, Transmission control module malfunction. 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
- P0873 2014 GMC Sierra indicates Transmission Fluid Pressure Switch 3 Circuit High Voltage.
- Common causes
- Common causes include Faulty transmission fluid pressure switch, Damaged wiring or connectors in circuit 3, Transmission control module malfunction.
- 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 P0873 2014 GMC Sierra Description
The P0873 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the Transmission Fluid Pressure Switch 3 Circuit High Voltage. This code is specifically related to the transmission system of the vehicle. The transmission fluid pressure switch is responsible for monitoring the hydraulic pressure within the transmission. When the switch detects a high voltage signal in circuit 3, it triggers the P0873 code.
Common Causes of P0873 2014 GMC Sierra
- Faulty transmission fluid pressure switch
- Damaged wiring or connectors in circuit 3
- Transmission control module malfunction
- Low transmission fluid levels
- Contaminated or degraded transmission fluid
Symptoms of P0873 2014 GMC Sierra
- Harsh shifting between gears
- Transmission slipping
- Delayed engagement when shifting
- Transmission overheating
- Illumination of the Check Engine Light
How to Fix P0873 2014 GMC Sierra
- Begin by connecting a diagnostic scanner to the vehicle's onboard computer to retrieve the specific trouble code and further diagnose the issue.
- Inspect the transmission fluid pressure switch and circuit 3 wiring for any visible damage or corrosion. Replace any faulty components as needed.
- Check the transmission fluid level and condition. Top off or replace the fluid if necessary.
- Clear the trouble code from the vehicle's computer and perform a test drive to ensure that the issue has been resolved.
- If the problem persists, consult a professional mechanic for further diagnosis and potential repairs.
Cost to Fix P0873 2014 GMC Sierra
The typical repair costs for addressing a P0873 code in a 2014 GMC Sierra can vary depending on the specific cause of the issue. On average, the parts required for this repair, such as a new transmission fluid pressure switch or wiring components, can range from $50 to $200. Labor costs at auto repair shops typically range from $80 to $150 per hour. The total cost of the repair, including parts and labor, could range from $150 to $500 or more. It is advisable to consult with a local auto repair shop for a more accurate estimate based on your specific vehicle and location.
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Frequently Asked Questions about P0873 2014 GMC Sierra Code
1. What does the OBDII code P0873 mean on a 2014 GMC Sierra?
P0873 indicates a high voltage issue in the Transmission Fluid Pressure Switch 3 Circuit, which monitors hydraulic pressure in the transmission.
2. What are the common symptoms of code P0873 in a 2014 GMC Sierra?
Symptoms include harsh or erratic shifting, the transmission being stuck in a single gear (limp mode), and the illumination of the check engine light.
3. What causes the P0873 code to appear on a 2014 GMC Sierra?
Common causes include a faulty transmission fluid pressure switch, wiring or connector issues, a damaged transmission control module (TCM), or low or dirty transmission fluid.
4. Can driving with the P0873 code damage my 2014 GMC Sierra?
Yes, continuing to drive with this code can cause further damage to the transmission due to improper fluid pressure regulation.
5. How do I troubleshoot the P0873 code on my GMC Sierra?
Begin by checking the transmission fluid level and condition, inspecting the wiring and connectors for damage, and testing the pressure switch with a multimeter.
6. How much does it cost to repair the P0873 code on a 2014 GMC Sierra?
Repair costs depend on the underlying issue but can range from $100 for wiring repairs to $500 or more if the pressure switch or TCM needs replacement.
7. Can a dirty or clogged transmission filter cause the P0873 code?
Yes, a clogged transmission filter can restrict fluid flow and cause pressure issues that may trigger the code.
8. Do I need to replace the transmission fluid pressure switch if I get the P0873 code?
Not always; the switch should only be replaced if testing confirms it is faulty. Other issues, such as wiring problems, might also be the cause.
9. Will clearing the P0873 code with a scanner fix the issue?
Clearing the code may turn off the warning light temporarily, but the issue will likely return unless the root cause is resolved.
10. Is the P0873 code related to low transmission fluid in a 2014 GMC Sierra?
Low transmission fluid can contribute to pressure issues that trigger the P0873 code, so it’s important to check and refill if necessary.
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