Code Definition

P1185 — Fuel Pump Temperature Sensor high

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Ford

About P1185

P1185 is a manufacturer-specific powertrain diagnostic trouble code recorded for Ford vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P1185 is stored, the module has detected a signal or supply voltage higher than the expected operating range; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1185 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

This code applies to Ford diesel engines with the Lucas EPIC injection pump, which carries a fuel temperature sensor so the control module can compensate fuel delivery for fuel density as temperature changes. DTC P1185 sets when the fuel pump temperature sensor signal is high, meaning the voltage is at the upper end of its range and the reported value is outside the expected window. On a thermistor circuit a high signal usually corresponds to an open circuit, high resistance, or a disconnected sensor, though a genuinely high fuel temperature can also be involved depending on the sensor charact...

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