AutoCodes – Chevrolet – P1434 2018 Chevrolet Silverado

P1434 2018 Chevrolet Silverado Code - Fuel Level Sensor 1 Reference Performance

Quick Answer

The signal circuit is connected to the Fuel Pump Driver Control Module, the 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
P1434 2018 Chevrolet Silverado indicates Fuel Level Sensor 1 Reference Performance.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 463
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 13, 2022
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Code P1434 2018 Chevrolet Silverado Description

The signal circuit is connected to the Fuel Pump Driver Control Module, the control module communicates with the Engine Control Module (ECM) via serial data. The Diagnostic Trouble Code (DTC) will be set when invalid data is received from the Fuel Pump Control Module.
OBDII Code P1434 2018 Chevrolet Silverado - Fuel Level Sensor 1 Reference Performance - AutoCodes.com
P1434 2018 Chevrolet Silverado Code - Fuel Level Sensor 1 Reference Performance

What are the Possible Causes of the DTC P1434 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 P1434 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 P1434 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 P1434 2018 Chevrolet Silverado code?

Need more information on how to fix the P1434 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1434 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 P1434 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P1434 in a 2018 Chevrolet Silverado?

- Common symptoms may include inaccurate fuel level readings on the dashboard, the fuel gauge fluctuating randomly, or the fuel gauge not working at all.

2. What are the possible causes of the OBDII code P1434 in a 2018 Chevrolet Silverado?

- The code P1434 typically points to issues with the Fuel Level Sensor 1 reference performance, which could be caused by a faulty fuel level sensor, wiring issues, or a problem with the fuel level sensor circuit.

3. How can I diagnose the OBDII code P1434 in my 2018 Chevrolet Silverado?

- Diagnosing the code P1434 may involve using an OBDII scanner to retrieve the code and check for any related codes. Additionally, a visual inspection of the fuel level sensor and its wiring can help identify any visible issues.

4. Can I still drive my 2018 Chevrolet Silverado with the OBDII code P1434?

- It is generally not recommended to drive the vehicle with code P1434, as inaccurate fuel level readings can lead to running out of fuel unexpectedly. It's best to address the issue promptly.

5. How can I repair the OBDII code P1434 in my 2018 Chevrolet Silverado?

- Repairing the code P1434 may involve replacing the faulty fuel level sensor, repairing any damaged wiring, or addressing any other issues identified during the diagnostic process.

6. Is it possible to reset the OBDII code P1434 in a 2018 Chevrolet Silverado without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, the code is likely to return if the root cause of the issue, such as a faulty fuel level sensor, is not addressed.

7. Are there any DIY tips for fixing the OBDII code P1434 in a 2018 Chevrolet Silverado?

- DIY tips may include checking the fuel level sensor wiring for any visible damage, ensuring proper connections, and testing the sensor's functionality using a multimeter.

8. How much does it typically cost to repair the OBDII code P1434 in a 2018 Chevrolet Silverado?

- The cost of repairing the code P1434 can vary depending on the extent of the issue and whether you choose to do the repairs yourself or take the vehicle to a mechanic. Costs may include parts and labor.

9. Can a faulty fuel level sensor cause other issues in a 2018 Chevrolet Silverado besides code P1434?

- Yes, a faulty fuel level sensor can cause other issues such as incorrect fuel level readings, inconsistent fuel gauge readings, and potential fuel system problems if not addressed promptly.

10. How long does it typically take to repair the OBDII code P1434 in a 2018 Chevrolet Silverado?

- The repair time for code P1434 can vary depending on the exact cause of the issue and the expertise of the person performing the repairs. It can range from a few hours to a full day in some cases.

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