Manufacturer Code Charts: 190504

190504 - P240A

Information saved in
DME

Fault code
190504 - P240A

Fault text
DMTL, heating, activation: open circuit

Fault description
The diagnostic function monitors the electrical connection
between the DME and the DMTL heater.

Condition for fault identification
Test condition:
The fault is recognized when a control signal is transmitted
to the DMTL heater and an open circuit is present.
Potential problem source(s):
- Defect in wiring harness
- Defect in power supply to DMTL
- DMTL defective
Terminal condition: none
Voltage condition:
- Electrical system voltage > 10 V
Temperature condition:
- None
Time condition:
- 5 sec.
Other conditions:
- none

Condition for fault memory entry
The fault is logged in the fault memory if it remains
continuously present for longer than 5 sec.

Action in service
- Check wiring harness
- Check voltage supply to DMTL
- Replace DMTL

Fault effect and breakdown warning
Breakdown notice:
- none
Possible apparent symptoms:
- none

Driver information
Warning light:
- ECE emissions warning lamp: off
- US emissions warning lamp: on
- ECE electronic engine power reduction: off
- US electronic engine power reduction: off
- CC message: off

Service instruction
- On E7X versions the power-supply voltage is from
Terminal 30gz, which is controlled by the CAS. If the
battery is severely discharged the CAS may deactivate this
Terminal 30gz, leading to this diagnostic fault code entry.