Error code
OBD2 P3456
OBD2P3456
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Cylinder 7 Exhaust Valve Control Circuit High.
Severity
highDriving with this issue can cause further engine damage, so it's best not to drive until repaired.
Summary
P3456 indicates an issue with the exhaust valve control circuit being too high in cylinder 7 of the engine.
Common Causes
- Faulty exhaust valve control solenoid for cylinder 7
- Wiring or connector issues related to the exhaust valve control circuit
Fixes
- Replace the faulty exhaust valve control solenoid for cylinder 7.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- P3400Cylinder Deactivation System
- P3401Cylinder 1 Deactivation/lntake Valve Control Circuit/Open
- P3402Cylinder 1 Deactivation/lntake Valve Control Performance
- P3403Cylinder 1 Deactivation/lntake Valve Control Circuit Low
- P3404Cylinder 1 Deactivation/lntake Valve Control Circuit High
- P3405Cylinder 1 Exhaust Valve Control Circuit/Open
- P3406Cylinder 1 Exhaust Valve Control Performance
- P3407Cylinder 1 Exhaust Valve Control Circuit Low
- P3408Cylinder 1 Exhaust Valve Control Circuit High
- P3409Cylinder 2 Deactivation/lntake Valve Control Circuit/Open
- P3410Cylinder 2 Deactivation/lntake Valve Control Performance
- P3411Cylinder 2 Deactivation/lntake Valve Control Circuit Low