B0600 code meaning
Mirror Adjustment Driver Side Circuit
What B0600 means
B0600 is not listed in the J2012 tables that are publicly accessible, and no manufacturer explains it. The title refers to the adjustment circuit of the driver's exterior mirror, which FMVSS 111 requires the driver to be able to tilt horizontally and vertically while seated. Saab's 9-3 monitors the two mirror motors in the driver door module: B1723 01 for the left/right output shorted to battery, B1724 02 for the up/down output shorted to ground, both evaluated only while the common motor line (B1600) is fault-free. The module then retries that axis four times per driving cycle. Memory mirrors also read the glass position; Britax's US6254242B1 uses a potentiometer linked directly to the glass for that.
B0600 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of B0600
- Driver mirror does not move in one or both axes
- Mirror memory position not restored
- Rear view to the driver's side limited until adjusted by hand
Common causes of B0600
- Most likelyMirror adjustment motor seized by corrosion or ice
- PossibleMirror wires broken in the door hinge passage
- PossibleWater in the mirror housing shorting the motor or sensor
- Less likelyDriver door module output faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Driver mirror motorDoor module
What each part of B0600 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 B0600 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 B0600
What does B0600 mean?
B0600 means "Mirror Adjustment Driver Side Circuit". B0600 is not listed in the J2012 tables that are publicly accessible, and no manufacturer explains it. It is a generic code, so it means the same on every make.
Is it safe to drive with B0600?
B0600 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B0600 fail an emissions test?
B0600 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 B0600 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will B0600 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.