Code Definition

P1164 — Fuel temperature sensor out of range

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

About P1164

P1164 is a manufacturer-specific powertrain diagnostic trouble code recorded for Audi vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P1164 is stored, the module has detected a plausibility fault — the measured value is in the electrical range but is not consistent with expected operating behaviour; 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.

P1164 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 fuel temperature sensor is a negative temperature coefficient thermistor that allows the Engine Control Module (ECM) to compensate injected fuel quantity for the change in fuel density with temperature, and on diesel applications to monitor fuel system heat and trim injection timing. Unlike the short circuit and open circuit codes, DTC P1164 is a plausibility or rationality fault, meaning the signal is still within its electrical limits but the value it reports does not make sense to the ECM. The module typically compares fuel temperature against engine coolant temperature, intake air temp...

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