B0198
Front Blower Motor Power Circuit Malfunction
B0198 is an OBD-II diagnostic trouble code meaning: Front Blower Motor Power Circuit Malfunction. Common causes: open or short circuit in wiring harness, faulty fan relay. Estimated repair cost: $6–111.
Symptoms
- Heater fan does not work
- Fan only works at some speeds
- Fan fuse blows
- Extraneous noise from the motor
Causes
- Open or short circuit in wiring harness
- Faulty fan relay
- Blown fuse
- Fan motor wear
- Problems with contacts in connectors
- Faulty control button or resistor
How to Fix
- Check the fuse corresponding to the fan circuit
- Make sure the fan relay is working properly
- Check the power at the motor connector with the ignition on
- Check the motor itself by applying power directly
- Visually inspect the wiring harness for damage.
- Check the operation of the control button and additional resistor (if any)
- Replace fan motor or circuit components as necessary
Related codes
Error B0198 by Vehicle Brand
FAQ
What does the B0198 code mean?
B0198 is an OBD-II diagnostic trouble code that indicates: Front Blower Motor Power Circuit Malfunction
What causes a B0198 error code?
The most common causes of B0198 include: Open or short circuit in wiring harness; Faulty fan relay; Blown fuse; Fan motor wear.
How do I fix a B0198 diagnostic trouble code?
To fix B0198: Check the fuse corresponding to the fan circuit. Make sure the fan relay is working properly. Check the power at the motor connector with the ignition on. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B0198?
Limited driving only, diagnose soon
How much does it cost to fix B0198?
The estimated repair cost for B0198 is $6–111. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat