A P0306 diagnostic code on your 2022 Acura MDX indicates a cylinder 6 misfire condition. The 2022 MDX is powered by a 3.5L V6 engine producing 290 horsepower (Type S uses a 3.0L turbo V6 with 355 hp), making this code valid for all MDX V6 variants.
2022 MDX Engine Options
- Standard MDX: 3.5L naturally aspirated V6 (290 hp)
- MDX Type S: 3.0L twin-turbo V6 (355 hp)
Both engines have 6 cylinders, so P0306 is a valid code for any 2022 MDX.
Common Causes of P0306
- Ignition Coil Failure: Individual coil-on-plug failures are common
- Worn Spark Plugs: Iridium or platinum plugs degrade over time
- Fuel Injector Issues: Clogged or malfunctioning injector
- Carbon Buildup: Direct injection engines can accumulate valve deposits
- Vacuum Leaks: Intake manifold or gasket leaks near cylinder 6
- Mechanical Problems: Low compression from valve or piston issues
Acura MDX V6 Layout
The MDX's transversely-mounted V6 positions cylinder 6 at the rear of the front (firewall-side) bank. This location makes access more challenging, often requiring removal of the intake manifold cover and other components.