Manufacturer Code Charts: 193221

193221 - P144B

Information saved in
DME

Fault code
193221 - P144B

Fault text
Fuel level sensor: Deviation between consumption and fill-
level change

Fault description
The diagnostic function monitors the drop in the tank's fuel
level and compares it to the quantity of fuel injected into the
engine during the same period.

Condition for fault identification
Test condition:
The fault is recognized when the tank content that the DME
calculates from the injection signal deviates too starkly from
the actual gauge reading appearing in the instrument cluster.
Potential problem source(s):
- Fuel level sensor sticking
- Fuel level sensor mechanically damaged
- Float on fuel level sensor is damaged
- Frequent refueling with quantities of less than 5 liters (as
with rental vehicles)
Terminal condition: none
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- None
Time condition:
- None
Other conditions:
- Engine on
- No fault related to tank fuel-level sensor is currently
present
- At least 20 liters of fuel must be consumed without
refueling (multiple cycles possible)

Condition for fault memory entry
The diagnostic fault code is logged the first time (pending
FC) and then confirmed the second time (confirmed fault
code).

Action in service
- Read out instrument cluster ECU fault memory and work
through logged faults

Fault effect and breakdown warning
Breakdown notice:
Tank may be empty. Please refuel using fuel canister and
proceed to nearest service station. Then proceed to BMW
Service facility.
Possible apparent symptoms:
- Fuel gauge fails to read full after refueling.
- Tank is empty although gauge indicates that fuel is still
present.

Driver information
Warning light:
- ECE emissions warning lamp: off
- ECE electronic engine power reduction: off
- CC message: none
- US emissions warning lamp: off
- US electronic engine power reduction: off
- CC message: none

Service instruction
None