P0503moderate severityPowertrain
Vehicle Speed Sensor A Intermittent/Erratic/High
on 2017 Chevrolet Impala 2.5L I4 Ecotec · AWD
What this code means
Intermittent or erratic VSS signal.
Symptoms
- Erratic speedometer
- Random shifts
- Intermittent cruise issues
Common causes
- Loose connector
- Damaged wiring
- Worn tone ring
- Sensor going bad
Diagnostic steps
- Wiggle test connector
- Monitor signal stability
- Inspect tone ring
Repair notes
Repair connector or replace sensor.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1