P0499

P0499 00

Canister Close Valve Circuit. Short To B+.







Fault symptom
Check Engine

On-board diagnosis

Type of diagnosis:
Continuous

Enable criteria:
Battery voltage must be between 11 - 16 V.
Engine running.
Shut-off valve inactive.
NONE of the following DTCs must be detected:
- P0444, P0445
- P0686, P0687

Fault criteria:
Output voltage on the output exceeds below 2.0 V for more than 1 s.

Dependent
None

System reaction to a fault:
Fuel adaption is blocked and reset.
Purge blocked.

OK report:
Fault criteria NOT fulfilled for 6 s.

Fault handling:
Type III without Check Engine.
(See Description of On-Board Diagnostics/Fault handling III, "Other emission-related components and functions" for more information.)

Checking the wiring harness
Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help
Fault in connector H42-2 is often a cause of this DTC.