05 Internal fault (EEPROM)

Possible cause(s) of fault:

• Terminal 30 not activated
  
• Memory cell defective
  
• EMC scatter
  

Storage condition(s):

• On ignition off, data is written in the EEPROM area.
  
• With ignition on, the data in the memory is checked. In the case of implausibility of the EEPROM data, this fault entry is made.
  
• If there is no power supply via terminal 30, it can occur that the data transmission cannot be performed completely.
  
• If memory cells are defective, implausibilities can result.
  
• Note: This fault is frequently a secondary fault when terminal 30 was interrupted.
  

Troubleshooting procedure:

• Check power supply to terminal 30
  
• Erase fault code memory, switch ignition off/on and check whether the fault is entered again
  
• Yes: replace steering-angle sensor
  
• No: ignore fault, as it is likely that EMC scatter or a temporary power supply interruption was the cause
  

Note:

• After replacing the steering-angle sensor, it must first be coded and then calibrated using the ABS/DSC diagnostic program.