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DTC P1501:00: Notes

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DTC P1501:00 Vehicle speed sensor (VSS) out of self-test range
DETECTION CONDITION 
  • Indicates that the vehicle speed input signal is out of the self-test range. If the PCM detects a vehicle speed input signal any time during the self-test, DTC P1501:00 is set and the test aborts.
POSSIBLE CAUSE 
  • Noise on the vehicle speed input signal from radio frequency interference/electro magnetic interference
  • External sources, such as ignition wires, the charging circuit, or aftermarket equipment