MSS60 Error: 2789, P0420

From Wiki-DIY
Revision as of 13:50, 12 January 2015 by Rcollins (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

2789 - P0420

Information saved in DME
Fault code 2789 - P0420
Fault text Catalytic-converter conversion, bank 1
Fault description Catalyst System Efficiency Below Threshold (Bank 1)
Condition for fault identification Test condition: Diagnosis value above threshold K_KAT_OBD_WERT_MAX
Terminal condition: Engine running - Condition idle or part-load
Voltage condition: none
Condition for fault memory entry none
Action in service 1. Check exhaust system for leaks
2. No faults related to oxygen sensor or fuel system or VANOS should be present
3. Conduct oxygen sensor test routines, even if no oxygen sensor fault is present.
4. Replace catalytic conveter near engine
Fault effect and breakdown warning MIL on after engine runs 2x
Driver information Warning light: MIL
Service instruction None