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P1220 Diagnostic Trouble Code Discussion for March 2009

TP Sensor 2 Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1220
Help Request Posted
2003 GMC Envoy XL SLE 4.2L No Start VIN: 1GKET16S73
P1220: testing and results. ... performed first fuel pressure and compression in spec, injector pulse and spark on all cyl. Replaced spark plugs due to extreme carbon fouling. Codes P0622, P1523, and U1000 stored in memory but not current codes. Clear codes and attempt to start, P1120 an...
March 16, 2009