IS - 1st Gen (2001-2005) Discussion about the IS models up to the 2005 model

02 is300 P1121 code/car won't start

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Old 08-13-19 | 12:56 AM
  #1  
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Halloween
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Default 02 is300 P1121 code/car won't start

My car was having an acceleration issue and seemed to only happen on inclines like it was a connection problem with something. The CEL light was on and the Trac off was flashing and when I pulled the code it was P1120. When I checked the connection to the T.P.S. it was fine however when I checked the connector to the A.P.P.S. it slid off very easily and was very brittle and broke in about 3 diff places. I depinned the old connector and replaced with a new one, now the car won't start, (it turns over) and the code has disappeared and the lights are gone and I didn't reset myself. I don't know what happened, I didn't mess with anything else while under the hood.
If the connector I bought is faulty and isn't actually connecting to the A.P.P.S. like it should would that cause the car not start? Is there something else I forgot or should be doing? Any help is greatly appreciated.
Old 08-21-19 | 06:18 AM
  #2  
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TrueGS300
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Originally Posted by Halloween
My car was having an acceleration issue and seemed to only happen on inclines like it was a connection problem with something. The CEL light was on and the Trac off was flashing and when I pulled the code it was P1120. When I checked the connection to the T.P.S. it was fine however when I checked the connector to the A.P.P.S. it slid off very easily and was very brittle and broke in about 3 diff places. I depinned the old connector and replaced with a new one, now the car won't start, (it turns over) and the code has disappeared and the lights are gone and I didn't reset myself. I don't know what happened, I didn't mess with anything else while under the hood.
If the connector I bought is faulty and isn't actually connecting to the A.P.P.S. like it should would that cause the car not start? Is there something else I forgot or should be doing? Any help is greatly appreciated.
If you haven't got this figured out yet, you probably miss-connected the wires in the connector. Make sure the wires are in the right order. If that doesn't work, replace the APP sensor.
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PrisyCrisy (08-24-19)
Old 08-24-19 | 06:54 PM
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Totally agree with the wires not being put back correctly.
did you get this resolved?
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