P0873 2017 Chevrolet Silverado Code - Transmission Fluid Pressure Switch 3 Circuit High Voltage
Quick Answer
The transmission fluid pressure switch, also known as the pressure switch manifold, is a multiple switch assembly made up of 3 normally open pressure switches and 1 normally closed pressure switch. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Control Solenoid Valve Assembly. 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 2017 Chevrolet Silverado indicates Transmission Fluid Pressure Switch 3 Circuit High Voltage.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Control Solenoid Valve Assembly.
- 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.
Code P0873 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0873 2017 Chevrolet Silverado?
- Low transmission fluid level
- Dirty transmission fluid
- Faulty Transmission Control Solenoid Valve Assembly
- Transmission Control Solenoid Valve Assembly harness is open or shorted
- Transmission Control Solenoid Valve Assembly circuit poor electrical connection
- Faulty Transmission Control Module (TCM)
How to Fix the DTC P0873 2017 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0873 2017 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0873 2017 Chevrolet Silverado code?
Need more information on how to fix the P0873 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0873 2017 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0873 2017 Chevrolet Silverado Code
What does the OBDII code P0873 mean on a 2017 Chevrolet Silverado?
The P0873 code indicates a high voltage issue in the Transmission Fluid Pressure Switch 3 Circuit, which monitors hydraulic pressure in the transmission.
What are the common symptoms of code P0873 in a 2017 Chevrolet Silverado?
Symptoms may include harsh or delayed shifting, transmission slippage, reduced fuel efficiency, or the transmission entering limp mode.
What causes the P0873 code in a 2017 Chevrolet Silverado?
Common causes include a faulty transmission fluid pressure switch, damaged wiring or connectors in the circuit, low transmission fluid levels, or a failing transmission control module (TCM).
Can driving with the P0873 code damage my Silverado?
Yes, driving with this code for an extended period can cause further damage to the transmission, especially if the vehicle is stuck in limp mode or experiencing shifting issues.
How do I diagnose the P0873 code on my Silverado?
Diagnosis involves checking the transmission fluid level and condition, inspecting wiring and connectors for damage, testing the pressure switch, and using a scan tool to monitor live data and voltage readings.
How can I fix the P0873 code on a 2017 Chevrolet Silverado?
Repairs may include replacing the faulty pressure switch, repairing or replacing damaged wiring or connectors, topping off or replacing the transmission fluid, or reprogramming or replacing the TCM if necessary.
What tools are needed to troubleshoot the P0873 code?
You’ll need an OBDII scan tool, a multimeter to test wiring and voltage, and possibly a transmission pressure gauge for more advanced diagnostics.
Does the P0873 code mean I need a new transmission?
Not necessarily. The issue is often related to the pressure switch or wiring rather than requiring a full transmission replacement. Proper diagnosis is essential.
How much does it cost to repair the P0873 code on a Silverado?
Repair costs can range from $150 to $500 depending on whether the issue is a faulty pressure switch, wiring repair, or a more complex TCM problem.
Can low transmission fluid cause the P0873 code?
Yes, low or dirty transmission fluid can lead to improper hydraulic pressure and trigger this code. Always check fluid levels first.
Discuss the causes and fixes for P0873 2017 Chevrolet Silverado OBDII Code
Code P0873 2017 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
