P1440low severityPowertrain
EVAP Control System Small Leak
on 2021 Nissan Frontier 3.8L V6 · 4WD
What this code means
Small leak detected during EVAP system pressure test.
Symptoms
- CEL
- Fuel odor possible
- Failed emissions
Common causes
- Loose fuel cap
- Faulty purge valve
- Cracked canister
- Damaged EVAP hoses
Diagnostic steps
- Check fuel cap
- Smoke test EVAP system
- Test purge valve
- Inspect hoses
Repair notes
Tighten fuel cap or repair EVAP leak.
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