P1931 Mazda Code - Fuel Additive Pump Control Circuit/Open
Quick Answer
The Fuel Additive Pump is a positive displacement pump (reciprocating pump) and, in response to commands from the fuel additive control unit, delivers a metered quantity of fuel additive to the injector on the top of the fuel tank via a short fuel pipe; the injector then injects the additive into the fuel tank. 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
- P1931 Mazda indicates Fuel Additive 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.
Code P1931 Mazda Description
The piezo sensor on the Fuel Additive Pump records the fill level of the fuel additive in the fuel additive tank and transmits this information to the fuel additive control unit.
Its other task is to determine any change in the viscosity of the fuel additive as a function of ambient temperatures; this may result in the metered quantity of fuel additive having to be corrected.
If the fill level of the fuel additive in the fuel additive tank falls below a certain limit, the engine system fault warning lamp in the instrument cluster will switch on.
If the fuel additive tank becomes empty, the Malfunction Indicator Lamp (MIL) will light up.
What are the Possible Causes of the DTC P1931 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 P1931 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 P1931 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 P1931 Mazda code?
Need more information on how to fix the P1931 Mazda code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1931 Mazda code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1931 Mazda Code
1. What are the common symptoms of OBDII code P1931 in a Mazda related to the Fuel Additive Pump Control Circuit/Open?
The common symptoms include illuminated Check Engine Light, poor engine performance, and potential issues with the fuel system.
2. What are the possible causes of OBDII code P1931 in a Mazda?
The code P1931 in a Mazda can be caused by a faulty fuel additive pump, damaged wiring or connectors in the fuel additive system, or a malfunctioning fuel additive control module.
3. How can I diagnose the OBDII code P1931 in my Mazda?
Diagnosing the code P1931 involves using a diagnostic scanner to retrieve the trouble codes, inspecting the fuel additive pump and related components for any visible damage, and testing the wiring and connectors for continuity.
4. Can I still drive my Mazda with the OBDII code P1931 present?
It's not recommended to drive your Mazda with the code P1931 present, as it can lead to poor engine performance and potential damage to the fuel system. It's best to address the issue promptly.
5. How can I repair OBDII code P1931 in my Mazda?
Repairing the code P1931 may involve replacing the fuel additive pump, repairing or replacing damaged wiring or connectors, or addressing any issues with the fuel additive control module.
6. Is it possible to clear the OBDII code P1931 in a Mazda without fixing the underlying issue?
Clearing the code without fixing the underlying issue may temporarily turn off the Check Engine Light, but the problem will likely reoccur. It's important to address the root cause of the code.
7. Can a DIY enthusiast fix OBDII code P1931 in a Mazda?
Depending on your skill level and access to tools, it may be possible to fix the code P1931 yourself by following repair guides and using proper diagnostic equipment. However, professional assistance is recommended for complex issues.
8. How much does it typically cost to repair OBDII code P1931 in a Mazda?
The cost of repairing the code P1931 in a Mazda can vary depending on the exact cause of the issue, the parts needed for replacement, and labor costs. It's advisable to obtain quotes from different mechanics or repair shops.
9. Are there any preventive measures to avoid OBDII code P1931 in a Mazda?
Regular maintenance of the fuel additive system, checking for any signs of damage or wear, and addressing any fuel system issues promptly can help prevent the occurrence of the code P1931 in a Mazda.
10. How long does it take to repair OBDII code P1931 in a Mazda?
The repair time for the code P1931 in a Mazda can vary depending on the extent of the issue, availability of parts, and the expertise of the mechanic. It's recommended to consult with a professional for an accurate estimate.
Discuss the causes and fixes for P1931 Mazda OBDII Code
Code P1931 Mazda comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
