Code Definition

P1185 — FTS High - Fuel Pump Temperature Sensor High

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

About P1185

P1185 is a manufacturer-specific powertrain diagnostic trouble code. 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

The Engine Control Module (ECM) monitors the fuel pump temperature sensor (FTS) signal to protect the fuel system from overheating and to manage fuel delivery strategies. DTC P1185 is set when the ECM detects a voltage signal from the fuel pump temperature sensor that is higher than the calibrated upper limit, indicating an implausibly high fuel pump temperature reading. This condition is typically associated with a short to voltage, high circuit resistance, or a sensor fault causing an erroneously high temperature input.

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