Code Definition

P1124 — Throttle Position Sensor Out Of Self Test Range

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

About P1124

P1124 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 P1124 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.

P1124 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 Throttle Position Sensor (TPS) signal is outside the expected range during self-diagnostics. The TPS provides throttle angle data for fuel injection, ignition timing, and transmission shifting. An out-of-range reading may cause drivability issues such as hesitation, rough idling, or poor acceleration.

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