P0873 2016 Chevrolet Silverado Code - Transmission Fluid Pressure Switch 3 Circuit High Voltage
Quick Answer
The P0873 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado relates to the Transmission Fluid Pressure Switch 3 Circuit High Voltage. Common causes include Faulty transmission fluid pressure switch, Wiring issues or shorts in the circuit, Poor connection or corrosion in the electrical system. 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 2016 Chevrolet Silverado indicates Transmission Fluid Pressure Switch 3 Circuit High Voltage.
- Common causes
- Common causes include Faulty transmission fluid pressure switch, Wiring issues or shorts in the circuit, Poor connection or corrosion in the electrical system.
- 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 2016 Chevrolet Silverado Description
The P0873 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado relates to the Transmission Fluid Pressure Switch 3 Circuit High Voltage. This code indicates that there is an issue with the transmission fluid pressure switch circuit, specifically switch 3, where the voltage is higher than the expected range. The transmission fluid pressure switch is a crucial component that helps regulate the hydraulic pressure within the transmission, ensuring smooth gear shifts and optimal performance.
Common Causes of P0873 2016 Chevrolet Silverado
- Faulty transmission fluid pressure switch
- Wiring issues or shorts in the circuit
- Poor connection or corrosion in the electrical system
- Malfunctioning transmission control module
- Low transmission fluid levels or contaminated fluid
Symptoms of P0873 2016 Chevrolet Silverado
- Erratic shifting patterns
- Harsh gear changes
- Transmission slippage
- Illuminated Check Engine Light
- Transmission overheating
How to Fix P0873 2016 Chevrolet Silverado
- Begin by conducting a thorough inspection of the transmission fluid pressure switch and its wiring harness to check for any visible damage or corrosion.
- Use a multimeter to test the voltage output of the pressure switch circuit and compare it to the manufacturer's specifications.
- If the voltage is out of range, replace the faulty transmission fluid pressure switch with a new one.
- Inspect the wiring harness for any signs of damage or shorts, repairing or replacing any affected wires as needed.
- Clear the DTC from the vehicle's computer using an OBD-II scanner and test drive the vehicle to ensure that the issue has been resolved.
Cost to Fix P0873 2016 Chevrolet Silverado
The typical repair costs for addressing a P0873 code on a 2016 Chevrolet Silverado can range from $200 to $500, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, with rates potentially higher in metropolitan areas or at dealerships, and lower at independent shops. It's recommended to inquire locally for a more accurate estimate based on your specific circumstances.
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Frequently Asked Questions about P0873 2016 Chevrolet Silverado Code
1. What does the OBDII code P0873 mean on a 2016 Chevrolet Silverado?
P0873 indicates a "Transmission Fluid Pressure Switch 3 Circuit High Voltage," meaning the transmission control module (TCM) has detected high voltage in the circuit for the third pressure switch.
2. What are the common symptoms of code P0873 in a 2016 Chevrolet Silverado?
Symptoms include harsh or delayed shifting, slipping gears, the transmission going into limp mode, or the check engine light being illuminated.
3. What causes the P0873 code to appear on a 2016 Chevrolet Silverado?
Common causes include a faulty transmission fluid pressure switch, damaged wiring or connectors in the pressure switch circuit, low transmission fluid, or a malfunctioning TCM.
4. Can low transmission fluid cause the P0873 code in a 2016 Chevrolet Silverado?
Yes, low transmission fluid can cause improper pressure readings, potentially triggering the P0873 code.
5. How do you diagnose the P0873 code in a 2016 Chevrolet Silverado?
Diagnosis involves checking the transmission fluid level, inspecting the wiring and connectors for damage, testing the pressure switch for proper function, and scanning the TCM for related codes.
6. Is it safe to drive a 2016 Chevrolet Silverado with the P0873 code?
Driving with this code is not recommended, as it can lead to further transmission damage or unsafe driving conditions due to shifting issues.
7. How do you fix the P0873 code on a 2016 Chevrolet Silverado?
Repairs may include replacing the faulty transmission fluid pressure switch, repairing damaged wiring or connectors, topping off or flushing the transmission fluid, or reprogramming or replacing the TCM.
8. How much does it cost to repair the P0873 code on a 2016 Chevrolet Silverado?
Repair costs vary but typically range from $100 to $500, depending on whether the issue is with the pressure switch, wiring, or TCM.
9. Can a bad TCM cause the P0873 code on a 2016 Chevrolet Silverado?
Yes, a malfunctioning transmission control module can misinterpret pressure readings and trigger the P0873 code.
10. What tools are needed to troubleshoot the P0873 code on a 2016 Chevrolet Silverado?
You’ll need an OBDII scanner, a multimeter for checking voltage and continuity, and possibly a transmission pressure gauge for further testing.
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