P0230 on Lexus: How to Diagnose & Fix
Fuel Pump Primary Circuit Malfunction
1 Lexus model · 1 documented issue · 1 critical
P0230 on Lexus by model: symptoms, diagnosis and fix
The low-pressure fuel pump impeller can deform due to excessive fuel absorption, causing the fuel pump to become inoperative. This results in engine stalling while driving or inability to start, creating a serious safety hazard. Toyota/Lexus issued a massive recall (20V-863) affecting over 1.8 million vehicles across multiple models.
Common Symptoms
- Engine stalls while driving without warning
- Difficulty starting or no-start condition
- Engine runs rough or sputters at speed
- Fuel pressure warning codes
How to Fix
Replace the fuel pump assembly at any Lexus dealer free of charge under recall 20V-863. The dealer replaces the entire fuel pump with an updated unit that uses a redesigned impeller. If you have not received a recall notice, contact your dealer with your VIN to verify eligibility.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Owner tips & cautions
- WarningThis is a safety recall — do not delay getting the fuel pump replaced. Engine stalling at highway speed has caused multiple accidents. Check NHTSA.gov with your VIN for recall status.
Sources for this issue (3)
P0230 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0230 mean on a Lexus?
P0230 stands for "Fuel Pump Primary Circuit Malfunction." P0230 means the engine computer detected a fault in the fuel pump primary circuit — the control side that switches the fuel pump (or its relay) on and off. The PCM energizes this circuit to run the electric fuel pump that delivers fuel to the engine; if it sees voltage that is too high, too low, or out of expected range, it sets this code. Because the pump may not run correctly, the engine can crank without starting, stall, lose power, or hesitate. This is a circuit/control fault rather than a direct measurement of fuel pressure. On Lexus it is documented across 1 model: IS.
What are the most common causes of P0230?
The most common causes of P0230 are: Faulty fuel pump relay, Damaged wiring or connectors in the fuel pump control circuit, Corroded or loose ground/power connection, Failed fuel pump or fuel pump driver module, Blown fuse or fusible link, Open or short in the primary control wiring, Faulty PCM driver output (rare). The specific cause varies by vehicle.
How much does it cost to fix P0230 on a Lexus?
Repair costs vary widely with the root cause and Lexus model; each issue on this page carries its own estimate where one is published.
Looking for P0230 on a different make?
View P0230 across all makes →Join 600+ people using Au7o to better understand their vehicles.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.