OBD-II code family
Fuel Pump Circuit Faults (4 codes)
4 related fault descriptions. Use each full code and the exact vehicle service information to identify its circuit, monitored condition, and required tests.
Codes in this family
This is the complete published member list for this guide. Each code retains its own page; shared diagnostic context does not mean that every member has the same test or repair.
What these codes mean
P0230 names the fuel-pump primary circuit. P0231, P0232 and P0233 describe secondary circuit low, high and intermittent conditions. These are electrical monitor findings, not direct fuel-pressure measurements or proof that the in-tank pump failed. Each full code and failure suffix must be matched to the installed system.
Identify the relay, driver, control and feedback arrangement in the vehicle diagram. Ford’s covered 2024 operation summary separates primary/secondary checks, module control, internal faults and communication failures. A removable relay-coil test from an older vehicle is not a complete diagnostic procedure for every newer pump system.
Low/high describes the monitored electrical condition under the required command state. Expected input bias and feedback design matter; unplugging a component or hearing a relay click does not universally identify the failed part. An intermittent can recover before inspection, so a successful restart or one normal measurement does not establish that the circuit is repaired.
GM bulletin 23-NA-074, April 2025, provides a scoped P0232 example: its listed applications can have multiple pump, reference and communication codes associated with harness chafing near the battery tray support. The full scan and the applicable inspection are useful; the bulletin is not a rule to replace every pump named in a code.
Have the prescribed command, supply, ground, circuit and feedback tests performed with compatible equipment. Do not bridge unknown relays, power module pins, flex live fuel wiring or provoke a stall on the road. Fuel-system opening and tank access require the specified pressure release and vehicle support. Stop safely for stalling, unsafe power loss, a leak or strong fuel odor. The diagnostic-labor example is separate from any confirmed repair.
Identify the circuit on your vehicle
Match the full DTC, reporting module, and any failure-type suffix to the service information for your exact year, make, model, engine, and equipment. An identifier alone does not establish installed hardware count, location, connector pinout, or a universal measurement.
Where the manufacturer publishes its own meaning for this code, that is the one to work from — it describes the actual component on your vehicle, which the generic definition cannot. Keep the generic description for what it is good for: it tells you which subject area the standard assigned the code to, which is useful context when the two appear to disagree. If they do disagree, follow the manufacturer.