MSS60 Error: 273B, P014A, P0156, P2272, P2273

Information saved in	DME
Fault code	273B - P2273
Fault text	Oxygen sensor vibration check behind catalytic converter, bank 2
Fault description	O2 Sensor Signal Biased/Stuck Rich (Bank 2 Sensor 2)
Condition for fault identification	Test condition: Trim control suspicion with observation of P component and I component leads to guided LEAN control; if the post-cat oxygen sensor signal fails to respond accordingly, the error is assigned to the post-cat oxygen sensor
	Terminal condition: Engine running
	Voltage condition: none
Condition for fault memory entry	After K_LAVK_OBD_ACT_NK_M_CNT (1x) LEAN control events the oxygen sensor remains stuck at RICH
Action in service	1. Check exhaust system for leaks
	2. If OK, replace post-cat oxygen sensor LSNK B2
Fault effect and breakdown warning	MIL on after engine runs 2x / no effects on drivability
Driver information	Warning light: MIL
Service instruction	None

Information saved in	DME
Fault code	273B - P0156
Fault text	Oxygen sensor vibration check behind catalytic converter, bank 2
Fault description	O2 Sensor Circuit (Bank 2 Sensor 2)
Condition for fault identification	Test condition: Oxygen sensor signal too low, low threshold 649 mV (K_LANK_OBD_S_VL_US) for 2 (K_LANK_OBD_S_CNT) /K_LANK_OBD_S_AUTOM_CNT requests
	Terminal condition: Engine running
	Voltage condition: none
Condition for fault memory entry	Full-load K_LANK_OBD_S_VL_T (6s) for K_LANK_OBD_S_CNT (3x) /K_LANK_OBD_S_AUTOM_CNT (3x) attempts
Action in service	1. Check exhaust system for leaks
	2. If OK, replace post-cat oxygen sensor LSNK B2
Fault effect and breakdown warning	MIL on after engine runs 2x
Driver information	Warning light: MIL
Service instruction	None

Information saved in	DME
Fault code	273B - P014A
Fault text	Oxygen sensor vibration check behind catalytic converter, bank 2
Fault description	O2 Sensor Delayed Response - Rich to Lean (Bank 2 Sensor 2)
Condition for fault identification	Test condition: * Determine whether oxygen sensor voltage remains above 649 mV (K_LANK_OBD_S_SA_US)
	* Fault after 2 (K_LANK_OBD_S_CNT)/K_LANK_OBD_S_AUTOM_CNT attempts
	Terminal condition: Engine running
	Voltage condition: none
Condition for fault memory entry	Time K_LANK_OBD_S_SA_T (3s) after SA for K_LANK_OBD_S_CNT (2x) /K_LANK_OBD_S_AUTOM_CNT (3x) tries
Action in service	1. Check exhaust system for leaks
	2. If OK, replace post-cat oxygen sensor LSNK B2
Fault effect and breakdown warning	MIL on after engine runs 2x
Driver information	Warning light: MIL
Service instruction	None

Information saved in	DME
Fault code	273B - P2272
Fault text	Oxygen sensor vibration check behind catalytic converter, bank 2
Fault description	O2 Sensor Signal Biased/Stuck Lean (Bank 2 Sensor 2)
Condition for fault identification	Test condition: Trim control suspicion with observation of P component and I component leads to guided RICH control; if the post-cat oxygen sensor signal fails to respond accordingly, the error is assigned to the post-cat oxygen sensor
	Terminal condition: Engine running
	Voltage condition: none
Condition for fault memory entry	After K_LAVK_OBD_ACT_NK_F_CNT (1x) RICH control events the oxygen sensor sticks at LEAN
Action in service	1. Check exhaust system for leaks
	2. If OK, replace post-cat oxygen sensor LSNK B2
Fault effect and breakdown warning	MIL on after engine runs 2x / no effects on drivability
Driver information	Warning light: MIL
Service instruction	None

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