Body, generic

B0600 Mirror Adjustment Driver Side Circuit

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

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.

Likely causes

Mirror adjustment motor seized by corrosion or ice
Mirror wires broken in the door hinge passage
Water in the mirror housing shorting the motor or sensor
Driver door module output faulty

Symptoms

  • 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

Repair estimate

DifficultyMediumDIY possible
Parts and labour€80–450
Time0.5–2.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

driver mirror motordoor module

Related codes

B0601B0610

References: saabwisonline.com, saabwisonline.com, law.cornell.edu, patents.google.com.