Difference between revisions of "MSS60 Error: 275D, P0171, P0172"

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Latest revision as of 13:44, 12 January 2015


275D - P0171

Information saved in DME
Fault code 275D - P0171
Fault text Oxygen sensor limit position fault, bank 1
Fault description System Too Lean (Bank 1)
Condition for fault identification Test condition: Controller pegged at the MIN threshold 0.75 (K_LAM_REG_F_MIN) for at least a period of 30 sec. K_LAM_DIAG_REG_T
Terminal condition: Engine running
Voltage condition: none
Condition for fault memory entry Controller limit for K_LAM_DIAG_REG_T (60s)
Action in service 1. Check fuel system for leaks, initiate test routine as indicated
2. Check exhaust system for leaks
3. Check HFM for leaks and correct operation
4. Read out oxygen sensor diagnostic data, perform both oxygen sensor test routines as indicated
Fault effect and breakdown warning Engine runs erratically
Potential collateral error: Miss errors and lamda error MIL after engine runs 2x
Driver information Warning light: MIL
Service instruction None


275D - P0172

Information saved in DME
Fault code 275D - P0172
Fault text Oxygen sensor limit position fault, bank 1
Fault description System Too Rich (Bank 1)
Condition for fault identification Test condition: Controller pegged at MAX threshold 1.25 (K_LAM_REG_F_MAX) for time of at least 30 sec. (K_LAM_DIAG_REG_T)
Terminal condition: Engine running
Voltage condition: none
Condition for fault memory entry Controller limit for K_LAM_DIAG_REG_T (60s)
Action in service 1. Check fuel system for leaks, initiate test routine as indicated
2. Check exhaust system for leaks
3. Check HFM for leaks and correct operation
4. Read out oxygen sensor diagnostic data, perform both oxygen sensor test routines as indicated
Fault effect and breakdown warning Engine runs erratically
Potential collateral error: Miss errors and lamda error MIL after engine runs 2x
Driver information Warning light: MIL
Service instruction None