Code Definition

P3190 — Poor Engine Power

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

About P3190

P3190 is a manufacturer-specific powertrain diagnostic trouble code recorded for Lexus vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

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.

P3190 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

On a Toyota or Lexus hybrid, the Hybrid Vehicle Control ECU monitors engine torque and speed during engine start and operation requests to confirm the petrol engine is contributing the power the hybrid system expects. DTC P3190 is stored when the engine runs but fails to produce the expected power within a specified time, even though start authorisation and fuel injection were correctly commanded. It is typically detected when engine speed rises but torque output stays insufficient to support hybrid demands, so the hybrid ECU judges engine performance as inadequate. The driver may notice a war...

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