AutoCodes – Chevrolet – P0877 Chevrolet

P0877 Chevrolet Code - Transmission Fluid Pressure Switch 4 Circuit Low Voltage

Quick Answer

The Transmission Fluid Pressure (TFP) switch 4 is part of the Transmission Control Solenoid Valve Assembly which has no serviceable parts. 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: P0877 Chevrolet indicates Transmission Fluid Pressure Switch 4 Circuit Low 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.

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Code Popularity 3,752

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Aug 04, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P0877 Chevrolet Description

The Transmission Fluid Pressure (TFP) switch 4 is part of the Transmission Control Solenoid Valve Assembly which has no serviceable parts. The Transmission Control Module (TCM) supplies a signal circuit to the TFP switch 4. The TFP switch 4 has an internal case ground. TFP switch 4 is normally closed or LOW. When oil pressure is present at the TFP switch 4, the switch is open or HIGH. The normal LOW pressure control solenoid 5 controls pressure to the 1-2-3-4 clutch regulator valve. The TCM monitors the TFP switch 4 to determine the position of the 1-2-3-4 clutch regulator valve. When the 1-2-3-4 clutch is commanded OFF, pressure is present on the TFP switch 4. When the 1-2-3-4 clutch is commanded ON, the 1-2-3-4 clutch regulator valve moves and pressure to the TFP switch 4 is exhausted through the 1-2-3-4 clutch regulator valve. The Diagnostic Trouble Code (DTC) will be set when the TCM detects that the TFP switch 4 signal voltage remains LOW after the 1-2-3-4 clutch transitions from a HIGH pressure state to a LOW pressure state. The TCM counts each incident. The DTC sets when 5 counts are accumulated.

OBDII Code P0877 Chevrolet - Transmission Fluid Pressure Switch 4 Circuit Low Voltage - AutoCodes.com — P0877 Chevrolet Code - Transmission Fluid Pressure Switch 4 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0877 Chevrolet?

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

How to Fix the DTC P0877 Chevrolet?

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 does this mean?

Code Tech Notes

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0877 Chevrolet 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 P0877 Chevrolet code?

Need more information on how to fix the P0877 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0877 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P0877 2014 Chevrolet Silverado — Transmission Fluid Pressure Switch 4 Circuit Low Voltage
P0877 2015 Chevrolet Silverado — Transmission Fluid Pressure Switch 4 Circuit Low Voltage
P0877 2016 Chevrolet Silverado — Transmission Fluid Pressure Switch 4 Circuit Low Voltage
P0877 2017 Chevrolet Silverado — Transmission Fluid Pressure Switch 4 Circuit Low Voltage
P0877 2018 Chevrolet Silverado — Transmission Fluid Pressure Switch 4 Circuit Low Voltage

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0877 Chevrolet Code

1. What are the common symptoms of OBDII code P0877 in a Chevrolet related to the Transmission Fluid Pressure Switch 4 Circuit Low Voltage?

The common symptoms include harsh shifting, transmission slipping, delayed engagement, and the illumination of the Check Engine Light.

2. What typically causes the OBDII code P0877 in a Chevrolet related to the Transmission Fluid Pressure Switch 4 Circuit Low Voltage?

The code P0877 is usually triggered by a faulty transmission fluid pressure switch, damaged wiring or connectors, low transmission fluid levels, or internal transmission issues.

3. How can I diagnose the OBDII code P0877 in my Chevrolet indicating Transmission Fluid Pressure Switch 4 Circuit Low Voltage?

To diagnose this code, you can perform a visual inspection of wiring and connectors, check transmission fluid levels and condition, and use an OBDII scanner to monitor data related to the transmission fluid pressure switch.

4. Can driving with the OBDII code P0877 in a Chevrolet related to the Transmission Fluid Pressure Switch 4 Circuit Low Voltage cause further damage?

Continuing to drive with this code may lead to further transmission issues such as increased wear and potential transmission failure. It is recommended to address the problem promptly.

5. What are some repair tips for fixing the OBDII code P0877 in a Chevrolet indicating Transmission Fluid Pressure Switch 4 Circuit Low Voltage?

Repair tips include replacing the faulty transmission fluid pressure switch, repairing or replacing damaged wiring or connectors, ensuring proper transmission fluid levels, and addressing any internal transmission problems.

6. Is it possible to clear the OBDII code P0877 in a Chevrolet related to the Transmission Fluid Pressure Switch 4 Circuit Low Voltage without addressing the underlying issue?

Clearing the code without fixing the underlying problem will only temporarily turn off the Check Engine Light. The issue causing the code will persist and may lead to more severe transmission problems.

7. Can a DIY enthusiast resolve the OBDII code P0877 in a Chevrolet related to the Transmission Fluid Pressure Switch 4 Circuit Low Voltage?

Depending on their skill level and access to tools, a knowledgeable DIY enthusiast may be able to address this code by replacing the transmission fluid pressure switch or repairing wiring. However, diagnosing and fixing internal transmission issues may require professional help.

8. How much does it typically cost to repair the OBDII code P0877 in a Chevrolet related to the Transmission Fluid Pressure Switch 4 Circuit Low Voltage?

The cost of repairing this code can vary depending on the exact cause of the issue, labor rates in your area, and whether you choose to address the problem yourself or take your vehicle to a professional mechanic. Costs may range from a few hundred to over a thousand dollars.

9. Are there any preventive measures to avoid encountering the OBDII code P0877 in a Chevrolet related to the Transmission Fluid Pressure Switch 4 Circuit Low Voltage in the future?

Regularly checking and maintaining proper transmission fluid levels, addressing any transmission fluid leaks promptly, and ensuring timely transmission fluid changes can help prevent issues that may lead to the code P0877.