2B31

2B31 - P1639

Information saved in
DME

Fault code
2B31 - P1639

Fault text
Throttle-valve actuator, control range

Fault description
Throttle-valve actuator, control range

Condition for fault identification
Test condition:
Engine running
Terminal condition: Terminal 15
Voltage condition:
Voltage in onboard electrical system >= 8.5 V

Condition for fault memory entry
5 sec.

Action in service
- Visual inspection to determine whether contaminants are
preventing the throttle valve from executing ideal positional
adjustments
- Completely close the throttle valve by hand, checking for
consistent resistance and signs of stiction
- Replace throttle valve

Fault effect and breakdown warning
Ability to continue driving is restricted because engine
speed is limited to roughly 1300 rpm.
No electrical current to throttle valve, EGAS limp-home
mode, rpm limit, EML on

Driver information
Warning light:
MIL ON
EML ON (CC message: ID29)

Service instruction
None