Fendt 0F.1.13 – A038 - ECU, central electrical system: Right or left side lights or licence plate lighting faulty

Fault code 0F.1.13 indicates a failure in the position warning light circuit, specifically on Terminal 58. The official description states that the 'Right or left side lights or licence plate lighting [is] faulty'.

• 922 Vario COM III
• 924 Vario COM III
• 927 Vario COM III
• 930 Vario COM III
• 933 Vario COM III
• 936 Vario COM III
• Fendt 300 Vario (COM III)
• Fendt 400 Vario (COM III)
• Fendt 700 Vario (COM III / SCR)
• Fendt 800 Vario (COM III / SCR)
• Fendt 900 Vario (COM III / SCR / S4)
• Fendt 916
• Fendt 919
• Fendt 920
• Fendt 922
• Fendt 924
• Fendt 926
• Fendt 927
• Fendt 930
• Fendt 933
• Fendt 936
• Fendt 939

1. 1

   Visual Bulb Inspection: Check the right and left side marker lights, tail lights, and the license plate light for blown bulbs.

2. 2

   Trailer Socket Inspection: Check the rear trailer socket (X018) for corrosion, moisture, or short circuits.

3. 3

   Wiring Harness Check: Inspect the wiring harness running to the side lights and license plate for chafing or shorts to ground.

4. 4

   ECU Output Test: Test the A038 ECU using a 160-pin adapter box to verify if the module is outputting the correct voltage for Terminal 58.

1. 1

   Isolate the Circuit

   Disconnect any implements or trailers plugged into the rear X018 trailer socket to rule out an external short.

2. 2

   Replace Faulty Bulbs

   If any side light or license plate bulbs are burnt out, replace them with the correct wattage bulbs.

3. 3

   Clean/Replace Trailer Socket

   If the X018 trailer socket is corroded, clean the pins with electrical contact cleaner. If the housing is damaged or internally shorted, cut back the wiring and install a new socket.

4. 4

   Clear the Code

   Use the tractor's dashboard diagnostic menu or the FENDIAS diagnostic tool to clear the stored 0F.1.13 fault code.

5. 5

   ECU Replacement

   If the fault persists and the 160-pin adapter box test proves the A038 ECU is internally damaged and failing to supply Terminal 58, the A038 module must be replaced and requires EOL programming via the FENDIAS tool.