C0851Active Damping Control Front Right
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- C0851 has no public owner: neither code lists nor bulletins name it. Its subject is the adjustable damper at the right front corner. GM's electronic suspension on the 2011 Saab 9-5 files this corner as C0580 with three failure types: 02 when the high side is shorted to ground or to voltage, 04 for an open control line, 0F for an erratic coil current. The system works only between 9 and 16 V; a stored history entry clears after 41 fault-free ignition cycles. ZF's CDC design shows why wiring matters at this point: the proportional valve sits either inside, fed through the piston rod, or outside on the tube with its own sealed plug, and it is reset within milliseconds. Stellantis uses C15C4 and C15C5 for this corner. Damping falls back to a fixed setting.
- What you may notice
- Suspension warning in the instrument cluster
- Body movements less controlled over bumps
- Likely causes
- LikelyCorroded or loose plug at the right front damper
- PossibleProportional valve in the damper failed
- RareSupply outside 9-16 V causing erratic current readings
- Repair
- Hard · Usually a job for a workshop.Typical cost: €150 – €1,800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.