P1501moderate severityPowertrain
Vehicle Speed Sensor Circuit Intermittent
on 2005 Cadillac CTS 2.8L V6 · RWD
What this code means
The PCM detected intermittent signal loss from the Vehicle Speed Sensor circuit. The signal is present some of the time but drops out intermittently.
Symptoms
- Speedometer erratic or dropping to zero
- Check Engine Light
- Cruise control inoperative
- Transmission shift issues
- ABS/traction control warnings
Common causes
- Faulty vehicle speed sensor
- Damaged speed sensor wiring
- Loose speed sensor connector
- Corroded connections
- Faulty tone ring or reluctor
Diagnostic steps
- Monitor VSS signal with scan tool while driving
- Wiggle test speed sensor connector
- Inspect wiring for damage or chafing
- Check speed sensor air gap
- Test sensor resistance
Repair notes
Check wiring and connector first. Replace vehicle speed sensor if signal is intermittent at sensor.
Other Powertrain codes on this vehicle
P0001
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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