P0873 2015 GMC Sierra Code - Transmission Fluid Pressure Switch 3 Circuit High Voltage
Quick Answer
The P0873 diagnostic trouble code (DTC) for a 2015 GMC Sierra relates to the Transmission Fluid Pressure Switch 3 Circuit High Voltage. Common causes include Faulty transmission fluid pressure switch, Damaged wiring or connectors in the circuit, Low transmission fluid levels. 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 2015 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 the circuit, Low transmission fluid levels.
- 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 2015 GMC Sierra Description
The P0873 diagnostic trouble code (DTC) for a 2015 GMC Sierra relates to the Transmission Fluid Pressure Switch 3 Circuit High Voltage. This code indicates that there is a problem with the transmission fluid pressure switch circuit, specifically switch 3, where the voltage is higher than the specified range. The transmission fluid pressure switch is a crucial component in the vehicle's transmission system, responsible for monitoring and controlling the hydraulic pressure within the transmission.
Common Causes of P0873 2015 GMC Sierra
- Faulty transmission fluid pressure switch
- Damaged wiring or connectors in the circuit
- Low transmission fluid levels
- Internal transmission problems
- Electrical issues in the transmission control module
Symptoms of P0873 2015 GMC Sierra
- Harsh shifting between gears
- Delayed engagement when shifting into gear
- Transmission slipping
- Transmission overheating
- Illumination of the Check Engine Light
How to Fix P0873 2015 GMC Sierra
- Begin by conducting a thorough inspection of the transmission fluid pressure switch 3 circuit to check for any visible damage or loose connections.
- Test the transmission fluid pressure switch using a multimeter to determine if it is functioning correctly.
- Check the transmission fluid level and quality, topping up or replacing as necessary.
- Inspect the wiring harness and connectors for any signs of damage or corrosion, repairing or replacing as needed.
- If the issue persists, further diagnostics may be required to identify any internal transmission problems that could be causing the high voltage reading.
Cost to Fix P0873 2015 GMC Sierra
The typical repair costs for addressing a P0873 code in a 2015 GMC Sierra can vary depending on the specific cause of the issue. On average, the cost of parts for replacing a transmission fluid pressure switch can range from $50 to $150, while labor costs can range from $100 to $300. Additional costs may be incurred for diagnostic testing, transmission fluid replacement, or any necessary repairs to the wiring or connectors. It is advisable to consult with a qualified mechanic or auto repair shop to obtain a more accurate estimate based on the specific circumstances of the vehicle. Keep in mind that labor rates at auto repair shops can vary, so it's recommended to inquire about rates in your local area for a more precise cost estimate.
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Frequently Asked Questions about P0873 2015 GMC Sierra Code
What does the OBDII code P0873 mean on a 2015 GMC Sierra?
1. P0873 indicates a high voltage issue in the Transmission Fluid Pressure Switch 3 Circuit, which monitors transmission fluid pressure to ensure proper operation. 2.
What are the common symptoms of code P0873 in a 2015 GMC Sierra?
Symptoms may include harsh or delayed shifting, the transmission slipping, the vehicle going into limp mode, or the check engine light turning on. 3.
What causes P0873 in a 2015 GMC Sierra?
Common causes include a faulty transmission fluid pressure switch, damaged or corroded wiring, a defective transmission control module (TCM), or low/contaminated transmission fluid. 4.
Can low transmission fluid cause a P0873 code?
Yes, low or contaminated transmission fluid can affect pressure readings and trigger the P0873 code. 5.
How do you diagnose the P0873 code on a 2015 GMC Sierra?
Diagnosis involves checking the transmission fluid level, inspecting wiring and connectors for damage, testing the pressure switch, and scanning the TCM for additional codes. 6.
Is it safe to drive with the P0873 code on a 2015 GMC Sierra?
Driving with this code is not recommended as it can lead to transmission damage or unsafe driving conditions if the issue affects shifting performance. 7.
How do you fix the P0873 code on a 2015 GMC Sierra?
Repairs may include replacing the transmission fluid pressure switch, repairing damaged wiring or connectors, replacing the TCM if faulty, or servicing the transmission fluid. 8.
How much does it cost to fix the P0873 code on a 2015 GMC Sierra?
Repair costs vary but typically range from $150 to $500, depending on whether the issue is with the pressure switch, wiring, or TCM. 9.
Can a faulty TCM cause the P0873 code in a 2015 GMC Sierra?
Yes, a malfunctioning TCM can misinterpret pressure readings and trigger the P0873 code. 10.
Will clearing the code solve the P0873 issue on a 2015 GMC Sierra?
Clearing the code may temporarily turn off the check engine light, but the underlying problem must be fixed to prevent the code from returning.
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