B0500 code meaning
Driver Power Window Circuit Malfunction
What B0500 means
No public J2012 list includes B0500, and no carmaker documents it, so the code is not verified. The title concerns the driver's power window circuit. Saab handles this under its own numbers: in the 9-3 (2003–2012) the driver door module logs B3205/B3210 for an open, shorted or overloaded down or up path and retries on every new drive cycle; on the 2011 9-5 the BCM sets B3205 for an incompatible, internally failed or unlearned motor, the latter without one-touch travel. In US6906487B2 an H-bridge reads motor current for pinch detection. FMVSS 118 requires a window that closes by itself to reverse before 100 N, so a fault may block automatic closing. Switch faults belong to B0245, the down path alone to B0252.
B0500 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of B0500
- Driver window does not move or only in one direction
- One-touch up/down and pinch protection out of action
- Window stops or reverses partway without reason
Common causes of B0500
- Most likelyWindow motor worn, sluggish or with a dead spot
- PossibleWires broken in the rubber trunk between body and door
- PossibleRegulator or glass runs bind, motor overloads
- Less likelyEnd positions lost after battery disconnection, relearn needed
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Driver window motorDriver window switchDoor moduleBody control module
What each part of B0500 means
| B | Body system: airbags, seat belts, power seats, lights and climate control. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 00 | The exact fault in that area. |
What to do next
- Note B0500 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 B0500
What does B0500 mean?
B0500 means "Driver Power Window Circuit Malfunction". No public J2012 list includes B0500, and no carmaker documents it, so the code is not verified. It is a generic code, so it means the same on every make.
Is it safe to drive with B0500?
B0500 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B0500 fail an emissions test?
B0500 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 B0500 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will B0500 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.