P3016moderate severityPowertrain
Exhaust Valve Control Solenoid Circuit Intermittent Bank 1
on 2015 Mazda Mazda3 2.0L I4 · FWD
What this code means
The exhaust valve control solenoid on Bank 1 has an intermittent electrical connection.
Symptoms
- Check Engine Light intermittent
- Occasional rough idle
- Sporadic emissions increase
- Variable idle quality
- Check Engine Light clears and returns
Common causes
- Loose solenoid connector
- Wiring intermittent near exhaust
- Solenoid failing under heat
- Connector corrosion
- Vibration-related wire break
Diagnostic steps
- Monitor exhaust VVT data for dropouts
- Wiggle test on solenoid connector
- Inspect wiring near exhaust manifold
- Test solenoid hot and cold
- Check connector integrity
Repair notes
Replace exhaust VVT solenoid or repair intermittent wiring.
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