Manufacturer Code Charts: 3028

3028 - P181C

Information saved in
DME

Fault code
3028 - P181C

Fault text
Zero-gear sensor, signal

Fault description
Neutral sensor, signal: Pulse-duty factor too high

Condition for fault identification
Test condition:
Neutral sensor must be detected as present
Terminal condition: Terminal 15
Voltage condition:
none

Condition for fault memory entry
1 sec.

Action in service
1.) PWM signal test with diagnosis job
'STATUS_NULLGANG_ERKENNUNG' ->should not
exceed 94 % in any transmission position;
2.) If PWM signal is not OK replace the neutral sensor and
reinitialize the neutral position using tester job
'STEUERN_NULLGANG_LERNEN';
3.) If the fault appears again, check shift shaft to ensure that
magnet is installed correctly -> if not, replace transmission
and reinitialize neutral position using tester job
'STEUERN_NULLGANG_LERNEN'
4.) If transmission is OK replace engine management and
reinitialize neutral position using tester job
'STEUERN_NULLGANG_LERNEN'

Fault effect and breakdown warning
MSA fails to operate
- MSA non-starter when fault appears the first time,
- No MSA start after engine is stalled,
- MSA functionality is not available

Driver information
Warning light:
MSA deactivated (ID450)

Service instruction
None