P0873 GMC Code - Transmission Fluid Pressure Switch 3 Circuit High Voltage
Quick Answer
The P0873 GMC code indicates that there is a problem with the transmission fluid pressure switch 3 circuit, specifically detecting 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 GMC 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 GMC Description
The P0873 GMC code indicates that there is a problem with the transmission fluid pressure switch 3 circuit, specifically detecting high voltage. This switch is responsible for monitoring the pressure of the transmission fluid and sending signals to the vehicle's computer system to ensure smooth shifting. When the voltage detected is higher than normal, it can lead to various issues with the transmission system.
Common Causes of P0873 GMC
- Faulty transmission fluid pressure switch
- Damaged wiring or connectors in the circuit
- Low transmission fluid levels
- Clogged transmission filter
- Internal transmission damage
Symptoms of P0873 GMC
- Harsh or delayed shifting
- Transmission slipping
- Overheating transmission
- Illuminated check engine light
- Transmission fluid leaks
How to Fix P0873 GMC
- Begin by diagnosing the issue with a scan tool to confirm the P0873 GMC code and identify the specific cause.
- Inspect the transmission fluid pressure switch and its circuit for any visible damage or loose connections. Replace the switch if necessary.
- Check the transmission fluid level and quality. Top up or replace the fluid as needed.
- Inspect the wiring and connectors in the circuit for any signs of damage or corrosion. Repair or replace as needed.
- Clear the trouble code from the vehicle's computer system and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0873 GMC
The cost of repairing a transmission fluid pressure switch issue can vary depending on the specific cause of the problem and the parts and labor required. In general, the cost of replacing a transmission fluid pressure switch can range from $150 to $300, including parts and labor. Keep in mind that additional costs may apply if other components need to be replaced or if there are underlying transmission issues that need to be addressed. It's recommended to consult with a professional mechanic for a more accurate estimate based on your vehicle's make and model.
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Information for Specific GMC Models
- P0873 2014 GMC Sierra — Transmission Fluid Pressure Switch 3 Circuit High Voltage
- P0873 2015 GMC Sierra — Transmission Fluid Pressure Switch 3 Circuit High Voltage
- P0873 2016 GMC Sierra — Transmission Fluid Pressure Switch 3 Circuit High Voltage
- P0873 2017 GMC Sierra — Transmission Fluid Pressure Switch 3 Circuit High Voltage
- P0873 2018 GMC Sierra — Transmission Fluid Pressure Switch 3 Circuit High Voltage
Frequently Asked Questions about P0873 GMC Code
1. What are the common symptoms of OBDII code P0873 in a GMC vehicle?
The common symptoms of OBDII code P0873 in a GMC vehicle include harsh shifting, transmission slippage, transmission overheating, and possibly an illuminated Check Engine Light.
2. What can cause the OBDII code P0873 related to Transmission Fluid Pressure Switch 3 Circuit High Voltage in a GMC vehicle?
The OBDII code P0873 related to Transmission Fluid Pressure Switch 3 Circuit High Voltage in a GMC vehicle can be caused by issues such as a faulty transmission fluid pressure switch, a short or open circuit in the wiring, or a malfunctioning transmission control module.
3. How can I diagnose the OBDII code P0873 in my GMC vehicle?
Diagnosing the OBDII code P0873 in a GMC vehicle involves using a diagnostic scanner to read the code, checking the transmission fluid level and condition, inspecting the wiring and connectors related to the pressure switch, and testing the pressure switch itself for proper function.
4. What are the possible repair options for OBDII code P0873 in a GMC vehicle?
Possible repair options for OBDII code P0873 in a GMC vehicle include replacing the faulty transmission fluid pressure switch, repairing any damaged wiring or connectors, resetting the trouble code with a scanner after making necessary repairs, and ensuring proper transmission fluid levels and quality.
5. Can driving with OBDII code P0873 in a GMC vehicle cause further damage?
Driving with OBDII code P0873 in a GMC vehicle can potentially cause further damage to the transmission system if left unresolved. It is recommended to address the issue promptly to prevent any serious transmission problems.
6. How much does it typically cost to repair OBDII code P0873 in a GMC vehicle?
The cost of repairing OBDII code P0873 in a GMC vehicle can vary depending on the exact cause of the issue, the cost of parts needed for repair, and labor charges. It is advisable to consult a professional mechanic for an accurate estimate.
7. Is it safe to continue driving my GMC vehicle with OBDII code P0873 present?
It is not recommended to continue driving your GMC vehicle with OBDII code P0873 present, as it can lead to potential transmission issues and further damage. It is best to address the problem as soon as possible.
8. Can a DIY enthusiast fix OBDII code P0873 in a GMC vehicle?
While some DIY enthusiasts may have the skills and tools to diagnose and repair OBDII code P0873 in a GMC vehicle, it is a complex issue related to the transmission system. It is recommended to seek professional help for accurate diagnosis and proper repair.
9. How long does it take to repair OBDII code P0873 in a GMC vehicle?
The time required to repair OBDII code P0873 in a GMC vehicle can vary depending on the extent of the issue, availability of parts, and the expertise of the mechanic. It is best to consult with a professional for an estimated repair time.
10. Are there any preventive measures to avoid OBDII code P0873 in a GMC vehicle?
To prevent OBDII code P0873 in a GMC vehicle, it is essential to maintain regular transmission fluid checks and changes, address any transmission issues promptly, and follow the manufacturer's recommended maintenance schedule for your vehicle.
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