AutoCodes – Mazda – P1929 Mazda

P1929 Mazda Code - Fuel Additive Level Pump Control Circuit Performance

Quick Answer

P1929 Mazda indicates Fuel Additive Level Pump Control Circuit Performance. Common causes include Faulty Fuel Additive Level Pump, Fuel Additive Level Pump harness is open or shorted, Fuel Additive Level Pump 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: P1929 Mazda indicates Fuel Additive Level Pump Control Circuit Performance.
Common causes: Common causes include Faulty Fuel Additive Level Pump, Fuel Additive Level Pump harness is open or shorted, Fuel Additive Level Pump 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 1,218

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 Sep 28, 2019

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

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

Code P1929 Mazda Description

OBDII Code P1929 Mazda - Fuel Additive Level Pump Control Circuit Performance - AutoCodes.com — P1929 Mazda Code - Fuel Additive Level Pump Control Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1929 Mazda?

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

How to Fix the DTC P1929 Mazda?

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 P1929 Mazda 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 P1929 Mazda code?

Need more information on how to fix the P1929 Mazda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1929 Mazda 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 P1929 Mazda Code

1. What are the common symptoms of OBDII code P1929 in a Mazda related to the Fuel Additive Level Pump Control Circuit?

The common symptoms include reduced engine performance, rough idling, poor fuel efficiency, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P1929 in a Mazda?

Possible causes include a faulty fuel additive level sensor, issues with the fuel additive pump, wiring or connector problems in the circuit, or a malfunctioning Engine Control Module (ECM).

3. How can I diagnose the Fuel Additive Level Pump Control Circuit for OBDII code P1929 in my Mazda?

Diagnosing the circuit involves checking the fuel additive level sensor, inspecting the fuel additive pump, testing the wiring and connectors for continuity, and scanning the ECM for any fault codes.

4. Are there any repair tips for fixing OBDII code P1929 in a Mazda?

Repair tips include replacing a faulty fuel additive level sensor or pump, repairing any damaged wiring or connectors, ensuring proper connections, and clearing the trouble codes with a diagnostic tool after the repairs.

5. Can OBDII code P1929 in a Mazda be safely driven with?

It is not recommended to drive the vehicle with OBDII code P1929 as it can lead to poor performance and potential damage to other components. It is best to address the issue promptly.

6. How much does it typically cost to repair OBDII code P1929 related to the Fuel Additive Level Pump Control Circuit in a Mazda?

The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $500, including parts and labor.

7. Is it possible to reset the OBDII code P1929 in a Mazda without fixing the underlying issue?

While you can clear the trouble code with a diagnostic tool, it is crucial to address the root cause of the problem to prevent it from reoccurring.

8. Can a DIY enthusiast repair OBDII code P1929 in a Mazda, or is it best left to professionals?

Repairing this code may require some technical knowledge and the right tools, so it is recommended to consult a professional mechanic for an accurate diagnosis and proper repair.

9. Will OBDII code P1929 in a Mazda affect emissions or the vehicle's ability to pass an inspection?

Yes, OBDII code P1929 can affect emissions and may cause the vehicle to fail an emissions inspection. It is important to resolve the issue to ensure compliance with regulations.

10. How long does it take to repair OBDII code P1929 in a Mazda?

The repair time can vary based on the specific cause of the issue and the availability of parts, but it may take a few hours to a day to diagnose and fix the problem properly.