Chassis, generic

C0822 Air Suspension Height Sensor Rear Left

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

For C0822 the search of code lists, NHTSA and the GM, Saab and Mitsubishi sources returned nothing. Per its title it covers the rear left level sensor of an air suspension. At the rear axle the harness runs close to the subframe and fuel tank, which is where Stellantis found the cause of its own code C1526 subcode 11, short to ground, on a 2019 Grand Cherokee: the wiring rubbed on bracket edges and had to be repaired, isolated and tied away (STAR S2108000161). On the 2022-23 Ram 1500 the same sensor sets C1526-2A when the module considers it stuck. HELLA notes that many such sensors work with two redundant channels, so the module can spot a split between them before the reading is used.

Likely causes

Harness rubbing on subframe or bracket edges near the fuel tank
Rear left height sensor or its link rod damaged
Module software misjudging the sensor as stuck

Symptoms

  • Service air suspension message
  • Rear left sags or rear ride height not adjusted

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–450
Time0.5–2.5 h

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

Parts involved

height sensor rlair suspension modulesensor wiring

Related codes

C0820C0821C0823

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