AutoCodes – Buick – P1433 Buick

P1433 Buick Code - Fuel Level Sensor 2 Circuit High Voltage

Quick Answer

With the engine running, the Powertrain Control Module (PCM) detects that the Fuel Level sensor signal was more than 2.90v, condition met for over 2 minutes. Common causes include Faulty Fuel Level Sensor, Fuel Level Sensor harness is open or shorted, Fuel Level 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: P1433 Buick indicates Fuel Level Sensor 2 Circuit High Voltage.
Common causes: Common causes include Faulty Fuel Level Sensor, Fuel Level Sensor harness is open or shorted, Fuel Level 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 3,006

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 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1433 Buick Description

With the engine running, the Powertrain Control Module (PCM) detects that the Fuel Level sensor signal was more than 2.90v, condition met for over 2 minutes.

OBDII Code P1433 Buick - Fuel Level Sensor 2 Circuit High Voltage - AutoCodes.com — P1433 Buick Code - Fuel Level Sensor 2 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1433 Buick?

Faulty Fuel Level Sensor
Fuel Level Sensor harness is open or shorted
Fuel Level Sensor circuit poor electrical connection

How to Fix the DTC P1433 Buick?

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 P1433 Buick 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 P1433 Buick code?

Need more information on how to fix the P1433 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1433 Buick 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.