No fan speed after configuring thinkfan

After doing some research, I noticed my fan was not properly running. I am running a TP E540.
Starting off with sensors, the fan speed is not being picked up, giving out 0 RPM:

coretemp-isa-0000
Adapter: ISA adapter
Package id 0:  +55.0°C  (high = +84.0°C, crit = +100.0°C)
Core 0:        +55.0°C  (high = +84.0°C, crit = +100.0°C)
Core 1:        +53.0°C  (high = +84.0°C, crit = +100.0°C)
Core 2:        +50.0°C  (high = +84.0°C, crit = +100.0°C)
Core 3:        +51.0°C  (high = +84.0°C, crit = +100.0°C)

BAT0-acpi-0
Adapter: ACPI interface
in0:          12.20 V  

thinkpad-isa-0000
Adapter: ISA adapter
fan1:           0 RPM

acpitz-acpi-0
Adapter: ACPI interface
temp1:        +55.0°C  (crit = +127.0°C)

I created a config file with the following to try and fix it:

chip "coretemp-isa-*" "thinkpad-isa-*"
set fan1_div 4

It gave the following error, and I couldn’t find any additional leads to make it work:

line 2: Unknown feature name
coretemp-isa-0000: No such subfeature known
<same for thinkpad-isa>

I managed to setup thinkfan as well, and it activates properly based on the temperature and levels, but there is no speed being picked up. 0 speed as well.
An example from the thinkfan status: Temperatures(bias): 52(0), 51(0), 56(0), 51(0), 56(0) -> level 2

The output from the fan file:

cat /proc/acpi/ibm/fan          
      
status:         enabled
speed:          0
level:          1
commands:       level <level> (<level> is 0-7, auto, disengaged, full-speed)
commands:       enable, disable
commands:       watchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))

My strongest guess is that the fan is not properly mapped, and I am not sure where to go from here.

Have you tried to give your proc. cores something to do? 55°C is not a very high temperature… Maybe the fan is picking up at a higher temperature. Make sure to remove all your manual manipulations, first.

I raised the temperature to 85, still nothing. Tested it yesterday as well.
There are no speed manipulation, and speed levels are changing properly according to the configuration set. I think as well thinkfan won’t work properly without the configuration file I set for it.
The fan speed seems to be changing, yet the speed is not being picked up, which is what I am after.

2 log entries as well for the tempsXlevels

Temperatures(bias): 80(0), 77(0), 80(0), 77(0), 77(0) -> level 7
Temperatures(bias): 77(0), 76(0), 77(0), 76(0), 77(0) -> level 6