U1601

The control unit software is missing or faulty.

Test 1: Reprogram control unit N118/3 (Left fuel pump control unit).

Test 2: Possible cause:

- Control units - Programming
Affected functions:

- Engine diagnosis
- Fuel system

1. Reprogram control unit N118/3 (Left fuel pump control unit).

Test 1.1: Initial startup

1.1. Initial startup
Perform initial startup.
The following procedure will guide you through all steps required to perform a complete initial startup of system Control unit 'Fuel pump'.Preconditions

- The new control unit must have already been installed.
You will be guided through the following steps

- Coding
Start process with button F2.

Warning!Communication with ECU required.


2. No further information available.