AutoCodes – Subaru – P0230 Subaru

P0230 Subaru Code - Fuel Pump Primary Circuit

Quick Answer

The Engine Control Module (ECM) provides ignition positive voltage to the coil side of the fuel pump relay. Common causes include Blown Fuel Pump fuse, Open Fuel Pump Monitor Circuit, Faulty Fuel Pump Relay. 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
P0230 Subaru indicates Fuel Pump Primary Circuit.
Common causes
Common causes include Blown Fuel Pump fuse, Open Fuel Pump Monitor Circuit, Faulty Fuel Pump Relay.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 19,122
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0230 Subaru 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 P0230 Subaru - Fuel Pump Primary Circuit - AutoCodes.com
P0230 Subaru Code - Fuel Pump Primary Circuit

What are the Possible Causes of the DTC P0230 Subaru?

  • Blown Fuel Pump fuse
  • Open Fuel Pump Monitor Circuit
  • Faulty Fuel Pump Relay
  • Damaged ECM

How to Fix the DTC P0230 Subaru?

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 P0230 Subaru 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 P0230 Subaru code?

Need more information on how to fix the P0230 Subaru code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0230 Subaru 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 P0230 Subaru Code

1. What are the common symptoms of OBDII code P0230 in a Subaru related to the fuel pump primary circuit?

The common symptoms include engine stalling, difficulty starting the vehicle, loss of power while driving, and increased fuel consumption.

2. What are the possible causes of the OBDII code P0230 indicating a fuel pump primary circuit issue in a Subaru?

Possible causes can include a faulty fuel pump relay, a damaged fuel pump, wiring issues, or a problem with the fuel pump control module.

3. How can I diagnose the OBDII code P0230 in my Subaru related to the fuel pump primary circuit?

Diagnosis typically involves checking the fuel pump relay, inspecting the fuel pump for proper operation, testing the wiring for any faults, and scanning the fuel pump control module for errors.

4. Is it safe to continue driving with the OBDII code P0230 related to the fuel pump primary circuit in my Subaru?

It is not recommended to drive the vehicle with this code present, as it can lead to engine performance issues and potential safety hazards on the road.

5. How can I repair the OBDII code P0230 indicating a fuel pump primary circuit problem in my Subaru?

Repairing this code often involves replacing the faulty fuel pump relay, repairing or replacing the fuel pump, addressing any wiring issues, or reprogramming the fuel pump control module.

6. Can a clogged fuel filter cause the OBDII code P0230 in a Subaru related to the fuel pump primary circuit?

While a clogged fuel filter can restrict fuel flow and potentially lead to fuel pump issues, it is not a direct cause of the P0230 code. It is still essential to check and replace a clogged fuel filter if necessary.

7. Will resetting the OBDII code P0230 in my Subaru related to the fuel pump primary circuit make it go away permanently?

Simply resetting the code may temporarily clear the check engine light, but if the underlying issue causing the code is not addressed, the code is likely to reappear after driving the vehicle.

8. How can I prevent the OBDII code P0230 from appearing again in my Subaru after repairing the fuel pump primary circuit issue?

Regular maintenance, such as checking fuel pump components, keeping the fuel system clean, and addressing any electrical issues promptly, can help prevent the recurrence of the P0230 code.

9. Is it necessary to visit a mechanic to diagnose and repair the OBDII code P0230 in my Subaru related to the fuel pump primary circuit?

While some DIY enthusiasts may diagnose and repair this code themselves, it is often recommended to consult a professional mechanic, especially if you are not experienced with automotive electrical systems.

10. Can extreme weather conditions impact the occurrence of the OBDII code P0230 in a Subaru related to the fuel pump primary circuit?

Extreme weather conditions, such as very high or low temperatures, can potentially affect the performance of the fuel pump and its components, leading to issues that trigger the P0230 code.

Discuss the causes and fixes for P0230 Subaru OBDII Code

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