Our 2015 Fabia has developed a fault with the central locking system. I cannot unlock the passenger door or either of the rear doors. However the drivers door and boot lock and unlock fine. When I operate the key fob I I can hear noises from the doors but they refuse to unlock. Additional symptoms are that the interior lights refuse to go off when you shut the doors and the alarm LED is continually lit when the car is locked.

I checked the error codes (B1 67929 if anyone can work that one out for me) and it came up with the message 'Driver Central locking lock unit Implausible signal'.

Is this likely to be due to a failure of the driver's door wiring loom? If not then can anyone let me know what it is likely to be?

Many thanks, Chris

 

22 hours ago, Chris_B104 said:

Our 2015 Fabia has developed a fault with the central locking system. I cannot unlock the passenger door or either of the rear doors. However the drivers door and boot lock and unlock fine. When I operate the key fob I I can hear noises from the doors but they refuse to unlock. Additional symptoms are that the interior lights refuse to go off when you shut the doors and the alarm LED is continually lit when the car is locked.

I checked the error codes (B1 67929 if anyone can work that one out for me) and it came up with the message 'Driver Central locking lock unit Implausible signal'.

Is this likely to be due to a failure of the driver's door wiring loom? If not then can anyone let me know what it is likely to be?

Many thanks, Chris

 

I have re-scanned the central locking computer and these are the current error codes. Can anyone help diagnose the likely fault area? I have checked the wiring loom in the drivers door and can't see any obvious fault. Would the lock unit generate these errors?

 

Trouble codes
B140F13
Passive/Sporadic
Voltage supply, terminal 30 for central locking
Open circuit

 

B190113
Passive/Sporadic
Voltage supply, terminal 30 for rear window heater
Open circuit

 

B195329
Passive/Sporadic
Driver side rear central locking lock unit
Implausible signal

 

B195429               Active/static
Front passenger side rear central locking lock unit
Implausible signal

 

B140A4B
Passive/Sporadic
Central locking
Excess temp.

 

B167929               Active/static
Driver central locking lock unit
Implausible signal

 

B168029
Passive/Sporadic
Front passenger central locking lock unit
Implausible signal