11C400

The lower limit value of component B4/6 (Rail pressure sensor) was dropped below/not reached.


Possible cause:

- Rail pressure sensor offset test
Affected functions:

- Power generation

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Test 1: Rail pressure sensor offset test

1. Rail pressure sensor offset test
Warning!Risk of explosion, poisoning and injury!Fuels are highly inflammable and toxic if inhaled. Fuels may cause skin damage. fuel vapors are explosive, invisible and spread out at floor level, they are toxic if inhaled and produce giddiness and an anaesthetizing effect.Rules of conduct and protective measures

- Wear suitable protective clothing.
- Pay attention to national safety precautions and regulations.
- No fire, sparks, naked flames and smoking.
- Ensure the work place is adequately ventilated.
- Never drain or pour in fuels over assembly pits.
- Store drained fuel in a suitable and sealed vessel.
- Immediately eliminate any fuel which has flowed out.
First-aid measures

- Clean moistened skin with water and soap.
- Change moistened clothing as quickly as possible.
- If fuel gets into your eyes, rinse out your eyes immediately with water and contact a doctor if necessary.


Rail pressure sensor offset test
Test prerequisites

- Prior to check, the residual pressure in the system must be released by briefly detaching a high pressure line.
- Switch on ignition.
Note

- If a rail pressure reading of over 15 bar is displayed, check the engine control module and the engine wiring harness for output increase (performance tuning).
Communication with ECU required