E153900

Efficiency of SCR catalytic converter


Possible cause:

- SCR (function chain)
Affected functions:

- Power generation

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Test 1: SCR (function chain)

1. SCR (function chain)
No current fault codes for the following components may be present

- Exhaust gas recirculation
- Fuel injection
- Diesel particulate filter
- Charge air system
- Hot film mass air flow sensor
Possible cause and remedy

- If other fault codes are present as current faults, then process these first.
- Continue with guided test (function chain) from control unit N118/5 (AdBlue® control unit)
Continue to test with button F2

Warning!Communication with ECU required.