Terminal 15 fault (b21f2) in EPKB166
05-27-2024, 04:50 PM
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mercedes
Terminal 15 fault (b21f2) in EPKB166
Hi,
patient c117 (c117.312) cla180 cdi 2014 year
one day while driving, car decided on its own to disable the entire ELS system (abs, esp, power steering, etc.), after turning off, the car was completely unresponsive in the first and second ignition positions.
The computer said that the problem was with the steering wheel lock - it went for replacement.
Once the car came to life, the computer showed errors:
Checked all fuses and relays 3 times and everything works fine, especially the handbrake.
Still B21F2 error code, still on the clocks the error "Parking brake see owner manual" (photo attached)
and after doing brake tests in the service menu i get error "Inaccessible diagnostics/control conditions" (photo attached)
Any ideas? It can be problem with EPB, that is working "good", or something with current on circuit 15, that deliver power to epb?
How can i check this? I out of ideas, especially without any wiring diagram...
patient c117 (c117.312) cla180 cdi 2014 year
one day while driving, car decided on its own to disable the entire ELS system (abs, esp, power steering, etc.), after turning off, the car was completely unresponsive in the first and second ignition positions.
The computer said that the problem was with the steering wheel lock - it went for replacement.
Once the car came to life, the computer showed errors:
- code B21F2 - Terminal 15 (This error pops up in module EKPB166 that is parking brake...)
- two rear ABS - they also went for replacement.
Checked all fuses and relays 3 times and everything works fine, especially the handbrake.
Still B21F2 error code, still on the clocks the error "Parking brake see owner manual" (photo attached)
and after doing brake tests in the service menu i get error "Inaccessible diagnostics/control conditions" (photo attached)
Any ideas? It can be problem with EPB, that is working "good", or something with current on circuit 15, that deliver power to epb?
How can i check this? I out of ideas, especially without any wiring diagram...
