Fuel Pump Primary Circuit Malfunction

What does P0230 mean?

P0230 stands for Fuel Pump Primary Circuit Malfunction. The engine computer has found a problem with how fuel and air are measured or mixed. This affects fuel economy, emissions and sometimes how smoothly the engine runs.

Powertrain codes cover the engine, transmission and emissions. When the car's computer sees a reading outside its normal range, it stores this code and may turn on a warning light on the dashboard.

Common causes

• Vacuum or intake air leaks
• Dirty or faulty mass airflow (MAF) sensor
• Faulty oxygen sensor or its wiring
• Fuel pressure problems (pump, filter or regulator)
• Clogged or leaking fuel injectors

What to do

1. Read all stored and pending codes with a scanner. Several codes together often point to one cause.
2. Note the freeze frame data (speed, temperature, load) recorded when the code was set.
3. Inspect the wiring and connectors of the part named in the code for damage, corrosion or looseness.
4. Fix the most likely and cheapest cause first, then clear the code and drive to see if it comes back.

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Frequently asked questions

What does P0230 mean?

P0230 means “Fuel Pump Primary Circuit Malfunction”. It belongs to the fuel and air metering group: The engine computer has found a problem with how fuel and air are measured or mixed. This affects fuel economy, emissions and sometimes how smoothly the engine runs.

Is it safe to drive with P0230?

You can usually drive carefully for a short time, but fix it soon to avoid further damage or higher fuel use.

How do I clear P0230?

Fix the cause, then clear the code with an OBD2 scanner or app. If the fault is still there, the code will come back.

Related codes

• P022CCharge Air Cooler Bypass Control A Circuit High
• P022DCharge Air Cooler Bypass Control B Circuit Open
• P022ECharge Air Cooler Bypass Control B Circuit Low
• P022FCharge Air Cooler Bypass Control B Circuit High
• P0231Fuel Pump Secondary Circuit Low
• P0232Fuel Pump Secondary Circuit High
• P0233Fuel Pump Secondary Circuit Intermittent
• P0234Engine Turbocharger/Supercharger Overboost Condition

Code meanings can vary by manufacturer. This page is general guidance, not a repair manual. Always confirm the cause before replacing parts.