P0873 2015 Chevrolet Silverado Code - Transmission Fluid Pressure Switch 3 Circuit High Voltage
Quick Answer
The P0873 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado refers to a Transmission Fluid Pressure Switch 3 Circuit High Voltage. Common causes include Faulty transmission fluid pressure switch, Damaged wiring or connectors in the circuit, Issues with the transmission 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
- P0873 2015 Chevrolet Silverado 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, Issues with the transmission 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 P0873 2015 Chevrolet Silverado Description
The P0873 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado refers to a 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 normal operating range. The transmission fluid pressure switch is responsible for monitoring the hydraulic pressure within the transmission and sending signals to the vehicle's computer system to ensure smooth shifting and overall transmission performance.
Common Causes of P0873 2015 Chevrolet Silverado
- Faulty transmission fluid pressure switch
- Damaged wiring or connectors in the circuit
- Issues with the transmission control module
- Low transmission fluid levels
- Contaminated or degraded transmission fluid
Symptoms of P0873 2015 Chevrolet Silverado
- Erratic shifting behavior
- Harsh shifting
- Transmission slippage
- Illuminated Check Engine Light
- Reduced fuel efficiency
How to Fix P0873 2015 Chevrolet Silverado
- Begin by conducting a thorough inspection of the transmission fluid pressure switch 3 circuit to check for any visible damage, such as frayed wiring or loose connectors.
- Test the transmission fluid pressure switch to determine if it is functioning correctly. If the switch is faulty, it will need to be replaced.
- Check the transmission control module for any signs of damage or malfunction. If necessary, the module may need to be reprogrammed or replaced.
- Inspect the transmission fluid level and quality. If the fluid is low or contaminated, it should be drained and replaced with the manufacturer-recommended fluid.
- Clear the DTC from the vehicle's computer system and test drive the vehicle to ensure that the issue has been resolved.
Cost to Fix P0873 2015 Chevrolet Silverado
The typical repair costs for addressing a P0873 code on a 2015 Chevrolet Silverado can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. Factors such as location, vehicle make and model, and engine type can also impact the overall repair costs. For a more accurate estimate, it is recommended to consult with local auto repair shops.
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Frequently Asked Questions about P0873 2015 Chevrolet Silverado Code
1. What does the OBDII code P0873 mean on a 2015 Chevrolet Silverado?
P0873 indicates a high voltage issue in the Transmission Fluid Pressure (TFP) Switch 3 Circuit, which monitors hydraulic pressure in the transmission.
2. What are the common symptoms of code P0873 in a 2015 Chevrolet Silverado?
Symptoms include harsh or delayed shifting, transmission slipping, failure to shift gears, and possible activation of limp mode.
3. What causes the P0873 code to appear in a 2015 Chevrolet Silverado?
Common causes include a faulty pressure switch, damaged wiring or connectors, low or contaminated transmission fluid, or an internal transmission problem.
4. Can I drive my 2015 Chevrolet Silverado with the P0873 code?
It is not recommended to drive with this code, as it may cause further transmission damage or leave the vehicle stuck in limp mode.
5. How do I diagnose the P0873 code on my 2015 Chevrolet Silverado?
Check the transmission fluid level and condition, inspect wiring and connectors for damage, and use a scan tool to monitor the TFP switch voltage and pressure readings.
6. How can I fix the P0873 code on my 2015 Chevrolet Silverado?
Repairs may include replacing the faulty pressure switch, repairing damaged wiring, flushing and refilling transmission fluid, or addressing internal transmission issues.
7. What tools are needed to troubleshoot the P0873 code?
You’ll need a scan tool capable of reading transmission data, a multimeter for testing electrical circuits, and possibly transmission fluid service tools.
8. How much does it cost to fix the P0873 code on a 2015 Chevrolet Silverado?
Repair costs can vary widely, from $100–$300 for minor repairs like wiring or switch replacement to $1,000+ for more extensive transmission work.
9. Can low transmission fluid cause the P0873 code?
Yes, low or contaminated transmission fluid can trigger the P0873 code by affecting hydraulic pressure and switch operation.
10. What happens if the P0873 code is ignored?
Ignoring this code can lead to severe transmission damage, poor vehicle performance, and costly repairs if the underlying issue is not resolved promptly.
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