OBD-II code · Chassis
C0821 Air Suspension Height Sensor Front Right
The front right ride height sensor reports an implausible or missing signal.
Is it safe to drive with C0821?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor linkage broken
- PossibleSensor failed
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Usually unaffected
- Parts involved
- Height Sensor Fr, Sensor Wiring
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.