Powertrain, generic (extended)

P2CE0 Cold Start Cylinder 6 Deactivation/Intake Valve Control Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

P2CE0 closes this series of cold start codes; numbering ends at cylinder 6 although many deactivation engines have eight cylinders. It indicates that cylinder 6 did not reach the valve state demanded during the cold start routine. No manufacturer documents P2CE0 publicly. Related evidence shows how such faults look in the field: a 2025 Ram bulletin (18-002-25) for the 2023 Ram 1500 with the 5.7 L Hemi MDS eTorque lists cylinder 6 deactivation and reactivation codes (P3441, P1416) with rough idle and misfire during warm-up, and fixes them with new PCM software. GM's L84 marks a cylinder 6 that keeps breathing as P349D, Type B. Look at software and oil supply before replacing lifters; the generic check outside cold start is P3442.

Likely causes

Deactivating lifter or rocker on cylinder 6 not switching
Engine control software that misjudges or mis-times the cold start switching, fixed by reprogramming
Low or delayed oil pressure after a cold start
Cylinder 6 control solenoid or its wiring degraded

Symptoms

  • Rough idle or misfire while warming up
  • Check engine lamp, often with a cylinder 6 misfire code
  • Cylinder deactivation may stay disabled afterwards

Repair estimate

DifficultyHardWorkshop job
Parts and labour€50–3,500
Time0–12 h

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

Parts involved

cylinder deactivation solenoid cyl 6intake valve actuatorengine oil

Related codes

P2CDFP3442P3441P349DP0306P3400

References: law.cornell.edu, gsi.ext.gm.com, static.nhtsa.gov.