DTC P1501: Notes
DTC P1501 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P1501 |
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 is set and the test aborts.
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| 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
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