P1270 Engine RPM Or Speed Limiter Reached

Possible causes
  • Wheel slippage (water, ice, mud, and snow).
  • Excessive engine RPM in NEUTRAL or operated in the wrong transmission gear.
  • Vehicle driven at a high rate of speed.
    • Tech notes
    The DTC indicates the vehicle was operated in a manner which caused the engine or vehicle speed to exceed a calibrated limit.
    Symptoms
    – Engine Light ON (or Service Engine Soon Warning Light)
    P1270 Description
    Indicates the vehicle has been operated in a manner which caused the engine or vehicle to exceed a calibration limit. The engine RPM and vehicle speed are continuously monitored and evaluated by the PCM. The DTC is set when the RPM or vehicle speed falls out of a calibrated range. For additional information on the engine RPM/vehicle speed limiter, refer to Section 1, Electronic Engine Control (EC) System Powertrain Control Software.
    P1270 Information for specific makes
    P1270 BUICK
    P1270 CADILLAC
    P1270 CHEVROLET
    P1270 FORD
    P1270 FORD
    P1270 GMC