C0823 code meaning
Air Suspension Height Sensor Rear Right
What C0823 means
C0823 is unknown to every public source, from code lists to the NHTSA index and maker documentation. The title refers to the rear right level sensor. Its reading matters most when loading, since the module uses the rear heights to keep ground clearance and headlamp aim constant. Stellantis gives the rear right corner its own code, C152A, and on the 2022-23 Ram 1500 with four-corner air suspension a stuck rear sensor reading was resolved by reprogramming the module, with the battery held between 13.2 and 13.5 V during the flash (08-127-23). HELLA's level sensor brief lists a 12-bit resolution and an operating range from -40 to 125 °C. A suspect sensor is checked against its lever position before replacement.
C0823 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C0823
- Service air suspension message
- Rear right sits low or high, load levelling inactive
Common causes of C0823
- Most likelyRear right height sensor, lever or ball joint worn or broken
- PossibleCorroded or loose sensor connector, damaged harness
- Less likelyAir suspension module software needing an update (Stellantis 08-127-23)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Height sensor rrAir suspension moduleSensor wiring
What each part of C0823 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 23 | The exact fault in that area. |
What to do next
- Note C0823 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about C0823
What does C0823 mean?
C0823 means "Air Suspension Height Sensor Rear Right". C0823 is unknown to every public source, from code lists to the NHTSA index and maker documentation. It is a generic code, so it means the same on every make.
Is it safe to drive with C0823?
Drive gently and only to a workshop. With C0823 the car can go into limp mode (reduced power) to protect itself.
Will C0823 fail an emissions test?
C0823 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is C0823 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2.5 hours of work. This is a job for a workshop.
Will C0823 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.