P1100 2018 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 2018 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.
Code P1100 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC P1100 2018 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 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 P1100 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.
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Frequently Asked Questions about P1100 2018 Chevrolet Silverado Code
1. What does the OBDII code P1100 mean on a 2018 Chevrolet Silverado?
P1100 indicates an issue with the Fuel Level Sensor 2 Signal Message Counter, meaning the fuel level data being sent to the vehicle's control module is inconsistent or incorrect.
2. What are common symptoms of the P1100 code on a 2018 Silverado?
Common symptoms include inaccurate fuel level readings, erratic or fluctuating fuel gauge behavior, or illumination of the check engine light.
3. What causes the P1100 code on a 2018 Chevrolet Silverado?
Possible causes include a faulty fuel level sensor, wiring issues such as damaged or corroded wires, or a malfunction in the vehicle's control module.
4. Can I still drive my Silverado with the P1100 code?
While the vehicle may still be drivable, inaccurate fuel level readings can increase the risk of running out of fuel unexpectedly. It's best to address the issue promptly.
5. How do I diagnose the P1100 code in my 2018 Chevrolet Silverado?
Diagnosis typically involves using an OBDII scanner to confirm the code, visually inspecting wiring and connectors for damage, and testing the fuel level sensor for proper functionality.
6. How can I fix the P1100 code on a 2018 Chevrolet Silverado?
Repairs may include replacing the faulty fuel level sensor, repairing damaged wiring or connectors, or reprogramming/updating the control module if necessary.
7. How much does it cost to repair the P1100 code on a Silverado?
The repair cost depends on the specific issue, but replacing a fuel level sensor can cost $200–$400, while wiring repairs may vary widely based on labor and parts.
8. Can a bad fuel pump cause the P1100 code?
Generally, the P1100 code is tied to the fuel level sensor and not the fuel pump, but a malfunctioning fuel pump assembly could indirectly affect sensor operation.
9. Will clearing the P1100 code solve the problem?
Clearing the code may temporarily remove the check engine light, but the underlying issue must be fixed to prevent the code from returning.
10. Is the P1100 code specific to the 2018 Chevrolet Silverado?
No, the P1100 code can appear on other GM vehicles, but the exact symptoms and causes may vary depending on the vehicle model and year.
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