Chassis, generic

C0820 Air Suspension Height Sensor Front Left

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

Nobody documents C0820 in the open; apart from Honda bulletin IDs that happen to contain the string, searches of lists and indexes found nothing. The title concerns the ride height sensor at the left front corner, a lever on the control arm turning an angle sensor that reports body height to the air suspension module. Stellantis uses its own numbers here: C151E for a stuck left front sensor on the 2022-23 Ram 1500, fixed by new module software (08-127-23, 08-150-24), and C1567 for an implausible left front level on the 2021 Grand Cherokee, where pinched front air lines were the cause. Without a valid front left height, the module stops levelling that corner or the whole car and shows a service message.

Likely causes

Bent, detached or seized sensor lever or link at the front left control arm
Water, corrosion or chafing at the sensor plug or harness in the wheel arch
Air suspension module software reporting a false stuck sensor (Stellantis 08-150-24)

Symptoms

  • Service air suspension message
  • Front left corner sits too high or too low, height changes refused

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–450
Time0.5–2 h

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

Parts involved

height sensor flair suspension modulesensor wiring

Related codes

C0821C0822C0823C0840

References: hella.com, static.nhtsa.gov, static.nhtsa.gov.