2CF1

2CF1 - P1637

Information saved in
DME

Fault code
2CF1 - P1637

Fault text
Throttle-valve actuator, position monitoring

Fault description
Throttle Valve Position Control, Control Deviation (Bank 1)

Condition for fault identification
Test condition:
Comparison of throttle valve's actual to its specifed angle is
greater than 0.2 sec. and less than 0.5 sec greater than a
value calculated from rpm and temperature
Terminal condition: Terminal 15=TRUE
Voltage condition:
battery voltage>7 V

Condition for fault memory entry
none

Action in service
Visual inspection of throttle valve for contamination/foreign
objects; check on Kb-B; otherwise replace DVE

Fault effect and breakdown warning


Driver information
Warning light:
MIL on in 2nd driving cycle

Service instruction
none