Condition For Fault Memory Entry - Miss Within 4 Diagnosis Windows

29D1 - P0305

Information saved in
DME

Fault code
29D1 - P0305

Fault text
Combustion misfires, cylinder 5

Fault description
Cylinder 5 Misfire Detected

Condition for fault identification
Test condition:
Combustion consistency measurement. Starting at engine
speed n > 400 and n < 6400
Terminal condition: Terminal 15, engine on
Voltage condition:
Voltage in onboard electrical system > 10 V

Condition for fault memory entry
Combustion miss detected within four diagnosis windows
consisting of 1000 crankshaft rotations

Action in service
Visual inspection of spark plugs, ignition coils, if OK switch
positions -> If defect moves with parts, replace defective
components, check ignition cables, wiring harness;
check injector valve, fuel system incl. high-pressure pump
(fuel level ?)
Visual inspection of catalytic system for damage (unusual
colors on catalytic converter casing, check monolithic
structure with endoscope)
Fault code entries triggered by faults in Valvetronic system
Valvetrain - HVA - Check elements for damage (broken
springs, mechanical damage)
Check compression (with max. stroke) After running all
checks with no defects detected, replace DME-SG

Fault effect and breakdown warning


Driver information
Warning light:
MIL flashes immediately

Service instruction
none