Condition For Fault Memory Entry - 3
2B38 - P0304Information saved in
DME
Fault code
2B38 - P0304
Fault text
Combustion miss with deactivation of Cyl. No. 4
Fault description
Condition for fault identification
Test condition:
Engine runs, no shunt current, no ignition miss, injection
enabled, ignition enabled, engine speed >
K_AUSS_OBD_N_Min and < K_AUSS_OBD_N_Max
relative induction charge density >
KL_AUSS_OBD_RF_Min(n) no dynamic response, no dual
ignition
Terminal condition: Terminal 15
Voltage condition:
none
Condition for fault memory entry
Ionic current integral in miss window less than a load and
rpm-dependent threshold
Action in service
1. Note additional error memory entries. Misses can also be
collateral malfunctions?
2. Replace spark plug.
3. Interchange ignition coil with other coil to localize
malfunction, replace as indicated.
4. Run compression check.
5. Check fuel supply.
6. Check plug and wiring harness.
Fault effect and breakdown warning
Rough idle / engine speed limited to 5000 rpm / Check
Control message / power reduction / MIL lights up after
engine runs 2X
Driver information
Warning light:
No
Service instruction
none