P1233 on Ford
Fuel Pump Driver Module Disabled or Offline
P1233 on Ford vehicles indicates fuel pump driver module disabled or offline. Au7o has documented this code across 1 Ford model — most commonly on F-350. The PCM lost the fuel pump monitor signal from the Fuel Pump Driver Module (FPDM), meaning the module has shut itself down or is no longer communicating. The engine may crank without starting or stall, because pump speed is no longer being commanded. Typical repair costs on Ford range from $200 to $700, depending on the specific model and root cause.
Common Causes of P1233
- •Failed fuel pump driver module (a known corrosion point on the frame rail or under the spare tire)
- •Corroded or water-damaged FPDM connector
- •Open or shorted FPM/FPC wiring between PCM and FPDM
- •Blown fuel pump fuse or failed inertia switch
- •Loss of battery feed or ground to the FPDM
P1233 on Ford by Model
Ford F-350(1 issue)
- Frame-Mounted Fuel Pump Driver Module Corrosion on Gas Super Duty2005-2010
Gasoline F-350s of this era (5.4L Triton V8 and 6.8L Triton V10) use a Fuel Pump Driver Module bolted directly to the steel frame rail behind the rear axle, where it takes the full spray of road salt and water. The aluminum module against the steel frame sets up galvanic corrosion; the housing corrodes through, moisture reaches the circuit board, and the module stops driving the in-tank pump. The result is intermittent stalling, extended cranking or an outright no-start, often with FPDM circuit codes stored. Trucks in salt-belt states fail earliest. This is a chassis/electrical failure and is unrelated to the CP4.2 high-pressure pump story on the diesel trucks.
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View P1233 across all makes →Frequently Asked Questions
What does P1233 mean on Ford?▼
P1233 stands for "Fuel Pump Driver Module Disabled or Offline." The PCM lost the fuel pump monitor signal from the Fuel Pump Driver Module (FPDM), meaning the module has shut itself down or is no longer communicating. The engine may crank without starting or stall, because pump speed is no longer being commanded. On Ford specifically, this code is documented across 1 model.
What causes P1233 on Ford vehicles?▼
Common causes on Ford: Failed fuel pump driver module (a known corrosion point on the frame rail or under the spare tire), Corroded or water-damaged FPDM connector, Open or shorted FPM/FPC wiring between PCM and FPDM, Blown fuel pump fuse or failed inertia switch, Loss of battery feed or ground to the FPDM. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P1233 on a Ford?▼
Repair costs on Ford range from $200 to $700, depending on the specific model and root cause.
Which Ford models have P1233 documented?▼
Au7o has documented P1233 on 1 Ford model: F-350.