C0545 code meaning
VIN Not Programmed or Incompatible - BSCM
What C0545 means
The brake system control module (BSCM) holds no vehicle identification number, or one that does not belong to the car it is fitted to. Modules store the VIN in non-volatile memory; GM patents describe a replacement module comparing its own stored VIN with the one held by another control unit and running a configuration routine when they differ, and point out that a swapped or tampered module shows up as a VIN discrepancy. The code therefore appears mainly after a used or new brake module has been installed without the programming and setup the maker requires; Saab 9-5 (2010) service data, for instance, demands programming plus configuration and setup after an EBCM replacement. No maker documents C0545 publicly with this meaning; GM uses the number for a power steering fault.
C0545 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C0545
- ABS or ESC warning lamp on after a module replacement
- Brake-related functions limited or disabled
Common causes of C0545
- Most likelyNew brake module installed without VIN programming
- PossibleUsed module from another vehicle still carrying its old VIN
- Less likelyProgramming session interrupted, for example by low battery voltage
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Brake system control module
What each part of C0545 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 45 | The exact fault in that area. |
What to do next
- Note C0545 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 C0545
What does C0545 mean?
C0545 means "VIN Not Programmed or Incompatible - BSCM". The brake system control module (BSCM) holds no vehicle identification number, or one that does not belong to the car it is fitted to. It is a generic code, so it means the same on every make.
Is it safe to drive with C0545?
Drive gently and only to a workshop. With C0545 the car can go into limp mode (reduced power) to protect itself.
Will C0545 fail an emissions test?
C0545 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 C0545 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 1.5 hours of work. This is a job for a workshop.
Will C0545 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.