AutoCodes – Chevrolet – P1100 2017 Chevrolet Silverado

P1100 2017 Chevrolet Silverado Code - Fuel Level Sensor 2 Signal Message Counter Incorrect

Quick Answer

The signal circuit is connected to the Fuel Pump Driver Control Module, and the Fuel Pump Driver Control Module communicates with the Engine Control Module (ECM) via serial data. Common causes include Faulty Fuel Pump Driver Control Module, Fuel Pump Driver Control Module harness is open or shorted, Fuel Pump Driver Control Module 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: P1100 2017 Chevrolet Silverado indicates Fuel Level Sensor 2 Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Fuel Pump Driver Control Module, Fuel Pump Driver Control Module harness is open or shorted, Fuel Pump Driver Control Module 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 256

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 Sep 26, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1100 2017 Chevrolet Silverado Description

The signal circuit is connected to the Fuel Pump Driver Control Module, and the Fuel Pump Driver Control Module communicates with the Engine Control Module (ECM) via serial data. The Diagnostic Trouble Code (DTC) will be set when the Message Counter between the Engine Control Module and the Fuel Pump Driver Control Module is Incorrect

OBDII Code P1100 2017 Chevrolet Silverado - Fuel Level Sensor 2 Signal Message Counter Incorrect - AutoCodes.com — P1100 2017 Chevrolet Silverado Code - Fuel Level Sensor 2 Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P1100 2017 Chevrolet Silverado?

Faulty Fuel Pump Driver Control Module
Fuel Pump Driver Control Module harness is open or shorted
Fuel Pump Driver Control Module circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P1100 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 P1100 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 P1100 2017 Chevrolet Silverado code?

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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 P1100 2017 Chevrolet Silverado Code

1. What does code P1100 mean on a 2017 Chevrolet Silverado?

Code P1100 indicates that the Fuel Level Sensor 2 Signal Message Counter is incorrect, meaning the ECM is detecting an issue with the communication or data from the secondary fuel level sensor.

2. What are the symptoms of code P1100 in a 2017 Silverado?

Common symptoms include erratic or inaccurate fuel gauge readings, poor fuel economy tracking, and potentially an illuminated check engine light.

3. What causes code P1100 to appear?

Typical causes include a faulty fuel level sensor, wiring or connector issues in the sensor circuit, or a problem with the ECM processing the signal.

4. Can I drive my 2017 Silverado with code P1100 active?

While the truck may still run, driving with this code can lead to inaccurate fuel level readings, increasing the risk of running out of fuel unexpectedly.

5. How do you diagnose code P1100 on a 2017 Chevrolet Silverado?

Diagnosis typically involves scanning for additional codes, inspecting the fuel level sensor wiring and connectors, and testing the sensor's functionality to ensure proper signal transmission.

6. Is the fuel level sensor the only part that can cause code P1100?

No, issues with the wiring harness, connectors, or even a malfunctioning ECM can also trigger this code.

7. How much does it cost to fix code P1100 on a Silverado?

Repair costs can vary but typically range from $150 to $500, depending on whether the fuel level sensor, wiring, or ECM needs replacement or repair.

8. Can a software update fix code P1100 in my 2017 Silverado?

In some cases, a software update from the dealership may resolve communication issues, but this depends on the exact cause of the code.

9. Is code P1100 specific to the 2017 Chevrolet Silverado?

No, P1100 can appear in other vehicles with similar fuel level sensor systems, but the specifics of the code definition and repair process may vary.

10. How can I prevent code P1100 from reoccurring?

Preventive measures include ensuring the fuel system components are regularly inspected, avoiding damage to wiring or connectors during repairs, and addressing any related codes promptly.