B2847
Driver Blind Spot Warning Light Control Circuit High
B2847 is an OBD-II diagnostic trouble code meaning: Driver Blind Spot Warning Light Control Circuit High. Common causes: shorting the indicator control wire to the supply voltage, malfunction of the led indicator in the side mirror. Estimated repair cost: $22–222.
Symptoms
- The blind spot indicator in the left mirror is constantly on
- Or the blind spot indicator does not work (does not blink when an object is detected)
- The BSM system malfunction warning is illuminated on the display
- Blind spot monitoring system does not work correctly
Causes
- Shorting the indicator control wire to the supply voltage
- Malfunction of the LED indicator in the side mirror
- Malfunction of the BSM system control unit
- Damage to the wiring in the door mirror harness
- Incorrect replacement of the mirror or its components
How to Fix
- Read BSM system error codes and record all active codes
- Check the status of the indicator in the left side mirror (visually)
- Disconnect the connector of the indicator control wire and measure the voltage on the wire (under normal conditions there should be no voltage)
- Test the control wire for short circuit with the power wires
- Check the wiring harness in the mirror for damage.
- If the indicator malfunctions, replace the mirror element; if the wiring is shorted, repair the damage
Related codes
FAQ
What does the B2847 code mean?
B2847 is an OBD-II diagnostic trouble code that indicates: Driver Blind Spot Warning Light Control Circuit High
What causes a B2847 error code?
The most common causes of B2847 include: Shorting the indicator control wire to the supply voltage; Malfunction of the LED indicator in the side mirror; Malfunction of the BSM system control unit; Damage to the wiring in the door mirror harness.
How do I fix a B2847 diagnostic trouble code?
To fix B2847: Read BSM system error codes and record all active codes. Check the status of the indicator in the left side mirror (visually). Disconnect the connector of the indicator control wire and measure the voltage on the wire (under normal conditions there should be no voltage). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B2847?
Yes, but get it checked soon
How much does it cost to fix B2847?
The estimated repair cost for B2847 is $22–222. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat