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| Information saved in
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DME
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| Fault code
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2743 - P0155
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| Fault text
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Oxygen sensor heater resistance diagnosis before cat. converter, bank 2
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| Fault description
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O2 Sensor Heater Circuit (Bank 2 Sensor 1)
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| Condition for fault identification
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Test condition: The upper or lower threshold of the resistance values has been violated, above/below 6.0 ohms (K_LSHVK_DIAG_RU) 14.5 ohms (K_LSHVK_DIAG_RO)
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Terminal condition: Engine running
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Voltage condition: Battery voltage > 9V (k_ed_ubmin)
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| Condition for fault memory entry
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min. K_LSHVK_DIAG_ANZ_MESS (100) valid calculations of heater resistance - roughly.1.5 sec.
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| Action in service
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1. DME software release must be more recent than 07-06-510, fix incorporated since 07-09-521
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2. Check plug, wiring harness on pre-cat oxygen sensor LSVK B2,
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3. If OK, replace oxygen sensor
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| Fault effect and breakdown warning
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MIL lamp on after engine runs 2x /Small influence on drivability
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| Driver information
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Warning light: MIL
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| Service instruction
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None
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