AutoCodes – Mazda – P1928 Mazda

P1928 Mazda Code - Fuel Additive Level Pump Control Circuit/Open

Quick Answer

P1928 Mazda indicates Fuel Additive Level Pump Control Circuit/Open. 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
P1928 Mazda indicates Fuel Additive Level Pump Control Circuit/Open.
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.
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Code Popularity 1,949
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 28, 2019
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Code P1928 Mazda Description

OBDII Code P1928 Mazda - Fuel Additive Level Pump Control Circuit/Open - AutoCodes.com
P1928 Mazda Code - Fuel Additive Level Pump Control Circuit/Open

What are the Possible Causes of the DTC P1928 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 P1928 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 P1928 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 P1928 Mazda code?

Need more information on how to fix the P1928 Mazda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1928 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 P1928 Mazda Code

1. What are the common symptoms of OBDII code P1928 in a Mazda related to the Fuel Additive Level Pump Control Circuit/Open?

Symptoms may include poor engine performance, decreased fuel efficiency, illuminated check engine light, and difficulty starting the vehicle.

2. What can cause the OBDII code P1928 Fuel Additive Level Pump Control Circuit/Open in a Mazda?

Possible causes include a faulty fuel additive pump, damaged wiring or connectors in the circuit, low fuel additive level, or a malfunctioning control module.

3. How can I diagnose the issue causing OBDII code P1928 in my Mazda?

Diagnosis typically involves checking the fuel additive level, inspecting the wiring and connectors for damage, testing the fuel additive pump for functionality, and scanning the vehicle's computer for specific trouble codes.

4. Is it safe to drive my Mazda with the OBDII code P1928 present?

It is generally not recommended to drive the vehicle with this code active, as it can lead to potential issues with fuel delivery and engine performance.

5. Can I fix the OBDII code P1928 Fuel Additive Level Pump Control Circuit/Open in my Mazda myself?

While some DIY enthusiasts may attempt to address this issue, it is advisable to consult a qualified mechanic or technician due to the complexity of diagnosing and repairing problems related to the fuel additive system.

6. What is the typical repair process for OBDII code P1928 in a Mazda?

Repairing this code often involves replacing the fuel additive pump, repairing or replacing damaged wiring or connectors, refilling the fuel additive tank, and clearing the trouble codes from the vehicle's computer.

7. How much does it cost to repair OBDII code P1928 in a Mazda?

The cost of repair can vary depending on the specific cause of the issue, the extent of the damage, and the labor rates in your area. It is recommended to obtain quotes from local mechanics or dealerships for an accurate estimate.

8. Can a faulty fuel additive pump cause other problems in my Mazda besides triggering OBDII code P1928?

Yes, a malfunctioning fuel additive pump can lead to a variety of issues, including poor engine performance, reduced fuel efficiency, and potential damage to other components in the fuel system.

9. How often should I check the fuel additive level in my Mazda to prevent OBDII code P1928?

It is a good practice to monitor the fuel additive level regularly, especially if you notice any changes in vehicle performance or fuel consumption. Checking it during routine maintenance intervals can help prevent issues related to low fuel additive levels.

10. Are there any preventative measures I can take to avoid encountering OBDII code P1928 in my Mazda?

Regularly servicing the fuel additive system, maintaining proper fuel additive levels, and addressing any warning signs or symptoms promptly can help prevent the occurrence of this trouble code.

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