P0501moderate severityPowertrain
Vehicle Speed Sensor A Range/Performance
on 1997 Cadillac DeVille 4.6L V8 Northstar · FWD
What this code means
The VSS reading is out of expected range.
Symptoms
- Speedometer erratic
- Harsh or erratic shifting
Common causes
- Sensor issue
- Tone ring damage
- Interference from other signals
Diagnostic steps
- Compare VSS to wheel speed sensors
- Check tone ring
- Monitor signal pattern
Repair notes
Replace VSS or repair tone ring.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1