AutoCodes – Chevrolet – P1434 2015 Chevrolet Silverado

P1434 2015 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 2015 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.

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Code Popularity 269

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 13, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1434 2015 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 2015 Chevrolet Silverado - Fuel Level Sensor 1 Reference Performance - AutoCodes.com — P1434 2015 Chevrolet Silverado Code - Fuel Level Sensor 1 Reference Performance

What does this mean?

What are the Possible Causes of the DTC P1434 2015 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 2015 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 2015 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 2015 Chevrolet Silverado code?

Need more information on how to fix the P1434 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1434 2015 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 2015 Chevrolet Silverado Code

What does the OBDII code P1434 mean for a 2015 Chevrolet Silverado?

Code P1434 indicates a problem with the Fuel Level Sensor 1 Reference Performance, meaning the sensor is not providing accurate readings to the vehicle's computer.

What are the common symptoms of code P1434 in a 2015 Chevrolet Silverado?

Symptoms may include inaccurate fuel gauge readings, sudden changes in fuel level display, or the check engine light turning on.

What causes the P1434 code to appear?

Possible causes include a faulty fuel level sensor, damaged wiring or connections, corrosion in the fuel tank module, or issues with the vehicle's PCM.

Can driving with code P1434 cause damage to my Silverado?

While it may not directly harm the vehicle, inaccurate fuel level readings can lead to running out of fuel unexpectedly, which could cause safety risks or leave you stranded.

How do I diagnose code P1434 in my 2015 Chevrolet Silverado?

Start by checking the wiring and connections to the fuel level sensor, inspecting for corrosion or damage. If these are fine, test the sensor with a multimeter or consult a professional for further diagnostics.

Can I fix code P1434 myself?

If the issue is related to loose wiring or corrosion, you might be able to repair it yourself. For sensor replacement or PCM-related issues, professional assistance is recommended.

How much does it cost to repair code P1434?

Repair costs can vary from $50 for wiring repairs to $150-$400 for fuel level sensor replacement, depending on labor and parts costs.

Is replacing the fuel level sensor the only solution for code P1434?

No, sometimes the issue is caused by damaged wiring or corrosion that can be repaired without replacing the sensor.

Can a bad PCM cause the P1434 code?

Yes, although it's less common, a malfunctioning PCM can occasionally cause this code by failing to process signals from the fuel level sensor correctly.

How can I prevent the P1434 code from occurring?

Regular maintenance, ensuring the fuel tank module is clean and free of corrosion, and inspecting wiring connections periodically can help prevent this code.