OBD-II code · Powertrain (manufacturer / generic)
P3464 Cylinder 8 Exhaust Valve Control Circuit High
The engine control module has detected a high voltage condition in the control circuit of the cylinder 8 exhaust valve deactivation solenoid. A short to voltage or open low-side path causes the driver to read above the expected range, disabling cylinder deactivation requests for cylinder 8.
Is it safe to drive with P3464?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelySolenoid or wiring shorted to power
- PossibleSolenoid coil open
- Less likelyECM driver failed
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–6 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Cylinder Deactivation Solenoid, Engine Wiring Harness, Ecm
Related codes
- P3416Cylinder 2 Exhaust Valve Control Circuit High
- P3424Cylinder 3 Exhaust Valve Control Circuit High
- P3432Cylinder 4 Exhaust Valve Control Circuit High
- P3439Cylinder 5 Exhaust Valve Control Circuit High
- P3447Cylinder 6 Exhaust Valve Control Circuit High
- P3463Cylinder 8 Exhaust Valve Control Circuit High
- P3488Cylinder 11 Exhaust Valve Control Circuit High
- P3461Cylinder 8 Exhaust Valve Control Performance
- P3462Cylinder 8 Exhaust Valve Control Circuit Low
- P3465Cylinder 8 Deactivation
- P3466Cylinder Deactivation Hydraulic Circuit Bank 1 Open
- P3467Cylinder Deactivation Hydraulic Circuit Bank 1 Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.