Engine Controls System: 191001

191001 - P0459

Information saved in
DME

Fault code
191001 - P0459

Fault text
Tank-venting valve, activation: short circuit to positive

Fault description
The diagnostic function monitors the control wire to the
EVAP valve for short circuits to positive.

Condition for fault identification
Test condition:
The fault is recognized by the driver circuit diagnostic
function.
Potential problem source(s):
- Defect in wiring harness between DME and EVAP
evaporative emissions valve
- Defect in evaporative emissions valve
- Defective DME
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

Condition for fault memory entry
This fault is logged in the control module's fault memory
immediately.

Action in service
- Check wiring harness between evaporative emissions valve
and DME
- Replace EVAP evaporative emissions valve
- Replace DME

Fault effect and breakdown warning
Breakdown notice:
None
Possible apparent symptoms:
MIL on, customer proceeds to service facility

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

Service instruction
None