AutoCodes – Generic – C1046

C1046 Code - Left Front Wheel Pressure Phase Monitoring

Quick Answer

The Anti-Lock Brake System (ABS) Module monitors the Left Front Wheel Pressure Phase. Common causes include Dirty Left Front Tone Wheel, Dirty Left Front Wheel Speed Sensor (WSS), Faulty Left Front Wheel Speed Sensor (WSS). 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: C1046 indicates Left Front Wheel Pressure Phase Monitoring.
Common causes: Common causes include Dirty Left Front Tone Wheel, Dirty Left Front Wheel Speed Sensor (WSS), Faulty Left Front Wheel Speed Sensor (WSS).
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 5,203

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 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1046 Description

The Anti-Lock Brake System (ABS) Module monitors the Left Front Wheel Pressure Phase. The ABS Module sets the OBDII if the ABS Module detects a pressure reduction phase and the following pressure hold phase is too long.

OBDII Code C1046 - Left Front Wheel Pressure Phase Monitoring - AutoCodes.com — C1046 Code - Left Front Wheel Pressure Phase Monitoring

What does this mean?

What are the Possible Causes of the DTC C1046?

Dirty Left Front Tone Wheel
Dirty Left Front Wheel Speed Sensor (WSS)
Faulty Left Front Wheel Speed Sensor (WSS)
Left Front Wheel Speed Sensor (WSS) harness is open or shorted
Left Front Wheel Speed Sensor (WSS) circuit poor electrical connection
Damage Left Front Tone Wheel
Faulty Anti-Lock Brake System (ABS) Module

How to Fix the DTC C1046?

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 C1046 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 C1046 code?

Need more information on how to fix the C1046 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1046 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1046 Chrysler — Left Front Wheel Pressure Phase Monitoring
C1046 Dodge — Left Front Wheel Pressure Phase Monitoring
C1046 Jeep — Left Front Wheel Pressure Phase Monitoring
C1046 Suzuki — Left Front Outlet Solenoid Circuit Failure

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 C1046 Code

1. What are the common symptoms of OBDII code C1046 (Left Front Wheel Pressure Phase Monitoring)?

Symptoms may include the ABS warning light illuminating on the dashboard, inconsistent braking performance, and potential issues with the left front wheel's pressure monitoring system.

2. What could cause OBDII code C1046 to trigger?

Possible causes of this code include a faulty wheel speed sensor, damaged wiring or connectors in the left front wheel circuit, or issues with the ABS module.

3. How can I diagnose the source of OBDII code C1046?

Diagnosing this code typically involves using a professional OBDII scanner to read the code, inspecting the left front wheel sensor and its wiring for damage, and testing the ABS module for proper functionality.

4. Is it safe to drive with OBDII code C1046 active?

It is not recommended to drive with this code active, as it can affect the performance of the ABS system and potentially compromise the safety of the vehicle.

5. Can I reset OBDII code C1046 on my own?

While you can attempt to clear the code using an OBDII scanner, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

6. What are some repair tips for fixing OBDII code C1046?

Repair tips may include checking and repairing any damaged wiring or connectors, replacing the left front wheel speed sensor if faulty, and ensuring proper connections to the ABS module.

7. How much does it typically cost to repair OBDII code C1046?

The cost of repairing this code can vary depending on the specific issue causing it, the labor rates of the repair shop, and the cost of any replacement parts needed.

8. Can OBDII code C1046 affect other systems in the vehicle?

While this code primarily relates to the left front wheel pressure phase monitoring, it can indirectly impact the overall performance of the ABS system and potentially affect other safety systems in the vehicle.

9. How urgent is it to address OBDII code C1046?

It is advisable to address this code promptly to ensure the proper functioning of the ABS system and maintain the safety of the vehicle during braking.

10. Are there any preventive measures to avoid OBDII code C1046 in the future?

Regular maintenance of the ABS system, including checking wheel speed sensors and wiring, can help prevent issues that may trigger OBDII code C1046.