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P1143 Diagnostic Trouble Code Discussion for September 2012

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

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Trouble Ticket Help Requests for DTC P1143
Help Request Posted
2004 Volkswagen Beetle GLS 1.8L MIL Lamp on VIN: 3VWCD31C64
P1143: Load detection value above upper limit. ... (p0300, p0303, p0301), codes p1143,p1297, p1166. We replace the pvc valve, pvc suction pump, mass air flow sensor, clean the throttle body, and relearn the throttle. After driving it, code p1143 is pending, the rest of the codes are not coming back on. Any...
September 07, 2012