U0453 code meaning
Invalid Data Received From Side Restraints Control Module - Left
What U0453 means
U0453 concerns a side restraints control module for the left side, used where side impact sensing or the firing of side and curtain airbags is handled by a separate unit next to the main restraints module. A receiver, usually the main restraints module, sets U0453 when the left unit's crash or status data are invalid; U0152 is lost contact, U0454 covers the right side. No manufacturer documents U0453 publicly. FMVSS 214 regulates side impact protection, and FMVSS 208 requires a readiness indicator, visible to the driver, that supervises deployable occupant protection, which is why an airbag warning lamp is the expected symptom; protection on the left side may be reduced until repair. For the main module (U0452), GM's tables use counter and protection checks without MIL.
U0453 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor0.5 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0453
- Airbag warning lamp on
- Side or curtain airbag on the left possibly not available
Common causes of U0453
- Most likelyLoose or corroded connector of the left side unit, for example under the seat or in the B-pillar
- PossibleSoftware or configuration of the left unit not matching the main restraints module
- Less likelyInternal fault of the left side restraints unit, often after a side impact
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Side restraints module left
What each part of U0453 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 53 | The exact fault in that area. |
What to do next
- Note U0453 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 U0453
What does U0453 mean?
U0453 means "Invalid Data Received From Side Restraints Control Module - Left". U0453 concerns a side restraints control module for the left side, used where side impact sensing or the firing of side and curtain airbags is handled by a separate unit next to the main restraints module. It is a generic code, so it means the same on every make.
Is it safe to drive with U0453?
U0453 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U0453 fail an emissions test?
U0453 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 U0453 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 2.5 hours of work. This is a job for a workshop.
Will U0453 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.