FixVault
Home
›
Cadillac
›
2003
›
Seville SLS
›
Repair and Diagnosis
›
Engine Performance
›
System
›
Engine Controls - Self-Diagnostics
›
Diagnostic Tests
›
DTC P0503: Vehicle Speed Sensor Erratic
›
Conditions For Setting DTC
Conditions For Setting DTC
The transmission Output Shaft Speed (OSS) drops 1089 RPM or more for at least one second (without high output).
The transmission OSS drops 1299 RPM or more for at least one second (with high output).