Code Definition

P1299 — Throttle position motor force engien shutdown mode

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

About P1299

P1299 is a manufacturer-specific powertrain diagnostic trouble code recorded for Isuzu 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.

P1299 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 electronic throttle control system has a tiered set of protective strategies, and the most severe is a forced engine shutdown used when the ECM cannot safely control the throttle by any lesser means. DTC P1299 sets when the ECM commands this forced shutdown for the throttle position motor, cutting the engine to prevent unintended acceleration or loss of throttle control. This is a last resort safety response, usually following repeated or serious throttle motor, sensor, or correlation faults. The driver experiences the engine stalling or refusing to run, severely reduced power, and a warni...

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