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277c - P114a, 277c - P114b, 277c - P2096, 277c - P2097
277C - P114A
| 277C - P114A | | | Information saved in | DME | | Fault code | 277C - P114A | | Fault text | Oxygen sensor trim control diagnosis, bank 1 | | Fault description | Post Catalyst Fuel Trim Via Oxygen Sensor System Too Rich (Bank 1) | | Condition for fault identification | Test condition: LEAN suspected under consideration of P-component ((6 (K_LA_TRIM_P_ANZ_MAX) + 3 (K_LA_TRIM_DIAG_P_SCHW P-spikes)) leads to deliberate RICH/LEAN control activation; if the pre-catalyst and post-catalyst oxygen sensors respond accordingly a trim control error is recognized. | | Terminal condition: Engine running | | Voltage condition: None | | Condition for fault memory entry | None | | Action in service | 1) Check intake and exhaust systems for leaks; incl. HFM operation/ ..if no fault is present.. | | 2.) Conduct oxygen sensor test routine | | 3.) If the test does not produce any results and the trim control error is still present ->Replace the sensor before the catalytic converter | | Fault effect and breakdown warning | MIL on after engine runs 2x / no effects on drivability | | Driver information | Warning light: MIL | | Service instruction | None |
277C - P114B
| 277C - P114B | | | Information saved in | DME | | Fault code | 277C - P114B | | Fault text | Oxygen sensor trim control diagnosis, bank 1 | | Fault description | Post Catalyst Fuel Trim Via Oxygen Sensor System Too Lean (Bank 1) | | Condition for fault identification | Test condition: LEAN suspected under consideration of P-component ((6 (K_LA_TRIM_P_ANZ_MAX) + 3 (K_LA_TRIM_DIAG_P_SCHW P-spikes)) leads to deliberate RICH/LEAN control activation; if the pre-catalyst and post-catalyst oxygen sensors respond accordingly a trim control error is recognized. | | Terminal condition: Engine running | | Voltage condition: None | | Condition for fault memory entry | None | | Action in service | 1) Check intake and exhaust systems for leaks; incl. HFM operation/ ..if no fault is present.. | | 2.) Conduct oxygen sensor test routine | | 3.) If the test does not produce any results and the trim control error is still present ->Replace the sensor before the catalytic converter | | Fault effect and breakdown warning | MIL on after engine runs 2x / no effects on drivability | | Driver information | Warning light: MIL | | Service instruction | None |
277C - P114A
| 277C - P114A | | | Information saved in | DME | | Fault code | 277C - P114A | | Fault text | Oxygen sensor trim control diagnosis, bank 1 | | Fault description | Post Catalyst Fuel Trim Via Oxygen Sensor System Too Rich (Bank 1) | | Condition for fault identification | Test condition: LEAN suspected under consideration of I-component (( 2 (K_LA_TRIM_DIAG_I_MIN_SCHW) recognition of I-component limit) leads to deliberate RICH/LEAN control activation; If the pre-catalyst and post-catalyst oxygen sensors respondaccordingly a trim control error is recognized. | | Terminal condition: Engine running | | Voltage condition: None | | Condition for fault memory entry | None | | Action in service | 1) Check intake and exhaust systems for leaks; incl. HFM operation/ ..if no fault is present.. | | 2.) Conduct oxygen sensor test routine | | 3.) If the test does not produce any results and the trim control error is still present ->Replace the sensor before the catalytic converter | | Fault effect and breakdown warning | MIL on after engine runs 2x / no effects on drivability | | Driver information | Warning light: MIL | | Service instruction | None |
277C - P2097
| 277C - P2097 | | | Information saved in | DME | | Fault code | 277C - P2097 | | Fault text | Oxygen sensor trim control diagnosis, bank 1 | | Fault description | Post Catalyst Fuel Trim System Too Rich (Bank 1) | | Condition for fault identification | Test condition: LEAN suspected under consideration of I-component (( 2 (K_LA_TRIM_DIAG_I_MIN_SCHW) recognition of I-component limit) leads to deliberate RICH/LEAN control activation; If the pre-catalyst and post-catalyst oxygen sensors respond accordingly a trim control error is recognized. | | Terminal condition: Engine running | | Voltage condition: None | | Condition for fault memory entry | None | | Action in service | 1) Check intake and exhaust systems for leaks; incl. HFM operation/ ..if no fault is present.. | | 2.) Conduct oxygen sensor test routine | | 3.) If the test does not produce any results and the trim control error is still present ->Replace the sensor before the catalytic converter | | Fault effect and breakdown warning | MIL on after engine runs 2x / no effects on drivability | | Driver information | Warning light: MIL | | Service instruction | None |
277C - P114B
| 277C - P114B | | | Information saved in | DME | | Fault code | 277C - P114B | | Fault text | Oxygen sensor trim control diagnosis, bank 1 | | Fault description | Post Catalyst Fuel Trim System Too Lean (Bank 1) | | Condition for fault identification | Test condition: RICH suspected under consideration of I-component (( 2 (K_LA_TRIM_DIAG_I_MAX_SCHW) recognition of I-component limit) leads to deliberate RICH/LEAN control activation; If the pre-catalyst and post-catalyst oxygen sensors respond accordingly a trim control error is recognized. | | Terminal condition: Engine running | | Voltage condition: None | | Condition for fault memory entry | None | | Action in service | 1) Check intake and exhaust systems for leaks; incl. HFM operation/ ..if no fault is present.. | | 2.) Conduct oxygen sensor test routine | | 3.) If the test does not produce any results and the trim control error is still present ->Replace the sensor before the catalytic converter | | Fault effect and breakdown warning | MIL on after engine runs 2x / no effects on drivability | | Driver information | Warning light: MIL | | Service instruction | None |
277C - P2096
| 277C - P2096 | | | Information saved in | DME | | Fault code | 277C - P2096 | | Fault text | Oxygen sensor trim control diagnosis, bank 1 | | Fault description | Post Catalyst Fuel Trim System Too Lean (Bank 1) | | Condition for fault identification | Test condition: RICH suspected under consideration of I-component (( 2 (K_LA_TRIM_DIAG_I_MAX_SCHW) recognition of I-component limit) leads to deliberate RICH/LEAN control activation; If the pre-catalyst and post-catalyst oxygen sensors respond accordingly a trim control error is recognized. | | Terminal condition: Engine running | | Voltage condition: None | | Condition for fault memory entry | None | | Action in service | 1) Check intake and exhaust systems for leaks; incl. HFM operation/ ..if no fault is present.. | | 2.) Conduct oxygen sensor test routine | | 3.) If the test does not produce any results and the trim control error is still present ->Replace the sensor before the catalytic converter | | Fault effect and breakdown warning | MIL on after engine runs 2x / no effects on drivability | | Driver information | Warning light: MIL | | Service instruction | None |
Last edited by regular guy; 04-09-2014 at 11:31 PM..
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