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P1120 Diagnostic Trouble Code Discussion for March 2009

TP Sensor 1 Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1120
Help Request Posted
1998 Ford F-150 Lariat 4.6L Poor Idle Quality, High Idle VIN: 1FTZX18W8W
P1120: TP Sensor Out of Range Low. ... in advance. I have this 98 Ford F150 that came in with the MIL on and found code P1120 checked tps out and it was cutting out. Replaced the sensor with a Motorcraft sensor and still idles high. I can go in to the idle air control function on my scan tool a...
March 13, 2009
2003 GMC Envoy XL SLE 4.2L No Start VIN: 1GKET16S73
... 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
1998 Mercury Tracer LS 2.0L Poor Idle Quality, idle speed too fast VIN: 1MEFM13P5W
P1120: Replaced the TPS. The idle speed went back up after a second road test. We had a Scanner hooked up in the bay at idle and the TPS voltage increased from .89-.99 & RPM went from 800 to 2000, with no accessories on or cooling fan. The fan did not affect the RPM when cycling. ...
March 30, 2009