B0910 code meaning
Wiper Motor Rear Circuit
What B0910 means
A public definition of B0910 is lacking in J2012 extracts as well as in OEM and NHTSA documents. The title refers to the rear window wiper motor circuit. On the second-generation Saab 9-3 the rear electrical centre drives it through a relay and stores B3720: 01 if more than 6 V sits on the output during activation, so the wiper does not work, and 06 if over 6 V is present with the wiper off, where a short to ground makes the wiper run constantly and an open line stops it. In Bosch's rear wiper a single arm is driven directly by a compact drive unit. TI names stall detection and low losses as key requirements for any wiper drive. Unlike the front wiper (B0900) no safety standard prescribes it, so failure is a comfort and visibility issue.
B0910 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyEasy, DIY possible
- Typical labor0.3 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of B0910
- Rear wiper does not run when switched on
- Rear wiper keeps running after switching off
Common causes of B0910
- Most likelyWire break in the tailgate hinge harness
- PossibleRear wiper motor or spindle seized by corrosion
- PossibleRear wiper relay faulty
- Less likelyRear module relay driver faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Rear wiper motorBody control module
What each part of B0910 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). |
| 10 | The exact fault in that area. |
What to do next
- Note B0910 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 B0910
What does B0910 mean?
B0910 means "Wiper Motor Rear Circuit". A public definition of B0910 is lacking in J2012 extracts as well as in OEM and NHTSA documents. It is a generic code, so it means the same on every make.
Is it safe to drive with B0910?
B0910 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B0910 fail an emissions test?
B0910 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 B0910 to fix?
Difficulty: easy. A typical repair takes 0.3 to 2 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will B0910 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.