Generic
Type:
    Powertrain - Ignition System or Misfire - ISO/SAE Controlled
Description:
    Timing Reference High Resolution Signal "A" Too Many Pulses

GM
Type:
    Powertrain - Ignition System or Misfire - ISO/SAE Controlled
Description:
    ICM 24X Reference Circuit Too Many Pulses Conditions
Cause:
    DTC P1376 not set, at least one CMP pulse received in last 250 ms, engine speed 496-3500 rpm, number of CMP edges since key on at 7 or more, eight 4X pulses received between CMP pulses, then the PCM detected more than 49 24X pulses between CMP pulses, or detected that the last 24X variance was 49 along with 49 current 24X pulses received