Powertrain, generic (extended)

P2DED Cylinder 4 Intake Valve Lift Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2DED is the cylinder 4 member of the per-cylinder lift checks: the engine computer finds this cylinder's lift off target or slow to follow. On four-cylinder engines with hydraulic lift control the oil comes first. FCA's tech tip for the 2.4 L Tigershark MultiAir asks the technician to exclude a low oil level, a filter or viscosity outside spec, old or diluted oil and a clogged screen in the oil gallery on top of the block, which feeds the MultiAir unit, before any actuator is replaced. FCA itself stores MultiAir faults under its own P1xxx numbers; P2DED is not documented publicly by any maker. Since MultiAir throttles the intake through the valves, a sticking cylinder 4 shows up as uneven idle, misfire or weaker pull. CARB counts such lift errors as emission faults.

Likely causes

Low, aged, diluted or wrong-viscosity oil
Clogged oil screen in the gallery feeding the lift unit
Oil filter not meeting the maker's specification
Worn cylinder 4 section of the lift actuator

Symptoms

  • Check engine light on
  • Misfire on cylinder 4, rough idle
  • Hesitation when accelerating

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–2,500
Time0.5–8 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

intake valve lift actuator cyl 4vvt system

Related codes

P2DECP2DEEP2DF0P0304P2CDE

References: law.cornell.edu, static.nhtsa.gov, en.wikipedia.org.