AutoCodes.com | All About OBDII Engine Codes
AutoCodes - Mazda - P0231 Mazda

P0231 Mazda Code - Low Open Or Short Circuit In The Fuel Pump Primary Circuit

- Code Popularity: 4,129 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
Share on Facebook   Share on Twitter   Share on Linkedin

What are the Possible Causes of the DTC P0231 Mazda?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Blown Fuel Pump fuse
  • Open Fuel Pump Monitor Circuit
  • Faulty Fuel Pump Relay
  • Damaged Engine Control Module (ECM)
⚠ Does your Mazda have Safety Recalls? → Check here

How to Fix the DTC P0231 Mazda?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Search for P0231 Mazda Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0231 Mazda code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

When is the Code Detected?

The code will be set if a low voltage on the control circuit of the fuel pump relay is detected by the ECM.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P0231 Mazda Description

The Engine Control Module (ECM) provides ignition positive voltage to the coil side of the fuel pump relay. When the ignition switch is first turned ON, the ECM energizes the fuel pump relay, which applies power to the fuel pump. The ECM enables the fuel pump relay as long as the engine is cranking or running, and crankshaft reference pulses are received. If no crankshaft reference pulses are received, the ECM de-energizes the fuel pump relay after 2 seconds. The ECM monitors the voltage on the fuel pump relay control circuit.

OBDII Code P0231 Mazda -  Low Open Or Short Circuit In The Fuel Pump Primary Circuit - AutoCodes.com
P0231 Mazda Code - Low Open Or Short Circuit In The Fuel Pump Primary Circuit

Need More Information on the Code?

Need more information on how to fix the P0231 Mazda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0231 Mazda code diagnosed by a professional: Find a repair shop in your area

Code P0231 Mazda comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the P0231 Mazda code? Have you replaced any parts?
Any information is appreciated. Thanks