Code Definition

P1116 — Engine Coolant sensor out of range/ECT Sensor Out Of Self Test Range

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

About P1116

P1116 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 P1116 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.

P1116 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 fault code is set when the Powertrain Control Module (PCM) detects that the Engine Coolant Temperature (ECT) sensor reading is outside the expected range during self-diagnostics. The ECT sensor provides critical data for engine management, affecting fuel injection, ignition timing, and cooling system operation. An out-of-range signal can lead to drivability issues, overheating, or incorrect fuel calculations.

Quick Facts