[84jr0]

Hi all,

I'm experiencing irregular idle speed when engine is cold, feels like missfire and it disappears after few 100 meters of driving.

I used deepOBD to read fault codes and got following:

DME/DDE:
0xCD9430 CAN communication in case of under-voltage: communication error to EGS, Error currently not available, but already stored

DME/DDE:
0x210801 Generator: type wrong, Error currently not available, but already stored
103655 km, 103700 km, 105310 km

DME/DDE:
0x12C601 nitrogen oxide sensor readiness for operation: the Signal will not be available at the Start, Error stored
104170 km

HEADUNIT:
MOST: the actual configuration is incomplete, Error currently not available, but already stored
103644 km, 105342 km, 105342 km

IHKA:
PATT module, signal line: short circuit to Minus or interruption, Error stored
104993 km

IHKA:
Compressor: shutdown due to the lack of DME-release, Error stored
104981 km

Then I found following on bmwfault.codes for 0x210801

Fault Code Description
Diagnosis monitors the identifier of the alternator and compares it with the target value.
The fault is detected when the identifier of the alternator does not match the identifier stored in the DME.

Possible cause of fault:
- Incorrect alternator installed

Fault Code Conditions
General Conditions Voltage condition:
- Target voltage of alternator once for at least 5 s: greater than system voltage +1.0 V or greater than 14 V
Temperature condition:
- None
Time condition:
- 10 s
Other conditions:
- Engine on
- Alternator not fully utilised
- No fault code relating to the alternator stored
Terminal Condition

Driving Conditions
Fault Time Condition
The fault code is entered if it exists for longer than 25.5 s
Service Plan
- If fault frequency less or equal to 3, clear fault code memory and take no further action
- If fault frequency is > 3, replace alternator

Fault Impact
Possible noticeable symptoms:
- Slightly irregular idle speed may occur
Breakdown information:
- None

Warnings
Warning Lights
- Emission warning lamp ECE: OFF
- Emission warning lamp US: OFF
- Electronic engine output reduction ECE: OFF
- Electronic engine output reduction US: OFF
- CC-message: NONE

Control Center Messages

Service Notes
- The alternator still supplies the vehicle with power.

I owned this car for few months and I have all history in terms of receipts from BMW service and I can't see that the alternator were ever replaced. Should I just clear that error and see what happens? Any other suggestions what to do? How about other errors I got out?

Thanks in advance!

[84jr0]

Anyone? Any ideas?