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P1143 Diagnostic Trouble Code Discussion for September 2004

Heated Oxygen Sensor (Bank 1 Sensor 1) Lean Shift Monitoring

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Trouble Ticket Help Requests for DTC P1143
Help Request Posted
2001 Volkswagen Jetta GLS 2.8L Hesitation, Cuts out, Stall, MIL Lamp on VIN: 3VWSG29M81
P1143: Load calculation cross check. ... stalling, found high LTFT, Replaced Mass air meter (OEM). Picked up. Two weeks later, same complaint, found engine was misfiring (P0301). Replaced spark plugs and wires. Engine runs smooth and picked up. This week came back with same problem but worse. Whe...
September 17, 2004