2B5B - P1638 (DME)

2B5B - P1638

Information saved in
DME

Fault code
2B5B - P1638

Fault text
Throttle valves fault status, bank 1

Fault description
Throttle Valve Position Control Throttle Stuck Temporarily
(Bank 1)

Condition for fault identification
Test condition:
egas_ist_dk_b2 > _ 1.2% (K_EGAS_SK_DK_OFFEN_1)
Terminal condition: TERM87
Voltage condition:
Battery voltage > 6.8V (k_egas_can_ed_ub_min)

Condition for fault memory entry
200 ms

Action in service
1. Check throttle valve assembly B1 for adjustment and
stiction
2. Check wiring harness plug and power supply to EDR B1
and DKG1
3. Check installed position of DKG1

Fault effect and breakdown warning
CC message
Engine speed limited
Reduced power

Driver information
Warning light:
EML, CC message, backup program

Service instruction
none