Chassis, generic

C0852 Active Damping Control Rear Left

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

Nothing public ties C0852 to a manufacturer; it is absent from every public list and index. The title covers the adjustable rear left damper. Some modern units use two valves per damper, one for compression and one for rebound. Stellantis does so on the 2024-26 Ram 1500 and Dodge Charger and logs the rear left pair as C15C6 and C15C7; its bulletin S2623000031 warns that these faults can only be diagnosed while active, so a module should not be replaced for stored entries, and tap tests on harness and pin fit come first. GM's older single-valve layout on the 2011 Saab 9-4X calls the same corner C0585. Rear dampers sit low and close to road spray, so plugs and cables there suffer most. Electronic damping is switched off until the fault clears.

Likely causes

Loose pin fit or intermittent contact in the rear left damper connector
Harness damaged by road spray, stones or corrosion near the rear axle
Compression or rebound valve in the damper failed

Symptoms

  • Service suspension warning
  • Rear feels bouncy or harsh, drive modes no longer change damping

Repair estimate

DifficultyHardWorkshop job
Parts and labour€150–1,800
Time0.5–4 h

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

Parts involved

active damper rldamper solenoidsuspension control module

Related codes

C0850C0851C0853C0920

References: static.nhtsa.gov, saabwisonline.com, zf.com.