AutoCodes – Chevrolet – P176C 2018 Chevrolet Silverado

P176C 2018 Chevrolet Silverado Code - Intermediate Speed Sensor Circuit Low Voltage

Quick Answer

The sensor contains a hall-effect sensor and additional electronics that process the signal. Common causes include Faulty Transmission Intermediate Shaft Speed Sensor, Transmission Intermediate Shaft Speed Sensor harness is open or shorted, Transmission Intermediate Shaft Speed Sensor circuit poor electrical connection. 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: P176C 2018 Chevrolet Silverado indicates Intermediate Speed Sensor Circuit Low Voltage.
Common causes: Common causes include Faulty Transmission Intermediate Shaft Speed Sensor, Transmission Intermediate Shaft Speed Sensor harness is open or shorted, Transmission Intermediate Shaft Speed Sensor circuit poor electrical connection.
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 456

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 29, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P176C 2018 Chevrolet Silverado Description

The sensor contains a hall-effect sensor and additional electronics that process the signal. It detects the change of the strength of the magnetic field caused by the reluctor ring. When the strength changes, the sensor changes the amount of current it consumes. This results in a square wave signal of the current, while the voltage stays constant. The control module detects the frequency in which the current changes, which is proportional to the rotational speed.
The sensor is an input to the control module. The input signal is used to determine the rotational speed of the component, the Diagnostic Trouble Code (DTC) will be set when the reaction Carrier Assembly Transmission Intermediate Speed Sensor is less than 0.25 V for greater than 1 s.

OBDII Code P176C 2018 Chevrolet Silverado - Intermediate Speed Sensor Circuit Low Voltage - AutoCodes.com — P176C 2018 Chevrolet Silverado Code - Intermediate Speed Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P176C 2018 Chevrolet Silverado?

Faulty Transmission Intermediate Shaft Speed Sensor
Transmission Intermediate Shaft Speed Sensor harness is open or shorted
Transmission Intermediate Shaft Speed Sensor circuit poor electrical connection
Faulty Transmission Control Module

How to Fix the DTC P176C 2018 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 P176C 2018 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 P176C 2018 Chevrolet Silverado code?

Need more information on how to fix the P176C 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P176C 2018 Chevrolet Silverado Code

1. What does the OBDII code P176C mean on a 2018 Chevrolet Silverado?

P176C indicates a low voltage issue in the intermediate speed sensor circuit, which helps monitor and control transmission performance.

2. What are the symptoms of code P176C in a 2018 Chevrolet Silverado?

Common symptoms include harsh or delayed shifting, erratic transmission behavior, a lit Check Engine Light, and reduced fuel efficiency.

3. What causes the P176C code to appear in a 2018 Chevrolet Silverado?

Possible causes include a faulty intermediate speed sensor, damaged wiring or connectors in the sensor circuit, transmission fluid contamination, or a malfunctioning transmission control module (TCM).

4. Can I still drive my 2018 Chevrolet Silverado with code P176C?

You may be able to drive the vehicle, but doing so can lead to transmission damage or unsafe driving conditions. Itâ€™s best to address the issue promptly.

5. How do I diagnose the P176C code in a 2018 Chevrolet Silverado?

Start by inspecting the wiring and connectors for damage or corrosion. Use a multimeter to test the intermediate speed sensor and verify circuit voltage. Scan the TCM for additional codes.

6. How do I fix the P176C code on a 2018 Chevrolet Silverado?

Repairs may include replacing the intermediate speed sensor, repairing damaged wiring, cleaning corroded connectors, or updating/reprogramming the TCM.

7. How much does it cost to fix the P176C code on a 2018 Chevrolet Silverado?

Costs vary based on the specific issue, but replacing the intermediate speed sensor typically ranges from $200 to $400, including parts and labor.

8. Can a dirty transmission fluid cause the P176C code?

Yes, contaminated or low transmission fluid can affect sensor performance and trigger the P176C code.

9. Does the TCM need to be reprogrammed to clear the P176C code?

In some cases, reprogramming or updating the TCM may be necessary if the issue stems from a software-related problem.

10. How can I prevent the P176C code from recurring on my 2018 Chevrolet Silverado?

Regularly inspect and maintain transmission fluid, ensure proper wiring connections, and address any transmission issues promptly to avoid recurring problems.