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PO43 chevy tahoe catalyst ststem - Cars & Trucks

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99 lexus GS-400 P420, where is the O2 sensor? Need Pics not words


Below is a picture of the location of both O2 sensors for your vehicle. Also the last picture is your evap. system. In the "dotted lined" area I would check for rotten or lose hoses in that area as well the vapor pressure sensor could be faulty as well. Hope this helps.

4_5_2012_6_18_20_pm.jpg4_5_2012_6_18_37_pm.jpg4_5_2012_6_18_51_pm.jpg

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Chevy Tahoe with a p1192 code...can you tell me what this means/indicates?


P1192 - Post-catalyst Fuel Trim System Bank 1
this is what your code is coded as, hope this helps get you started.
bank 1 im assuming oxygen sensor.

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2003 tahoe


For p0300 ,p0240 on chevy tahoe 00- 06 check a wire going along with the battery ground to the engine block thre should be a high resistence on the small wire ,it gets corrode over time ,it should be located on underneath of the driver side engine,

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97 Chevy Tahoe, bought used, not sure type Trans, diagnostic code


Number 5 cylinder may have clogged fuel injector. O2 sensor can be replaced on exhaust pipe. EGR valve can also be replaced. good luck

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Diagnostic codes 97 tahoe 4d 4wd 5.7


p1460 cooling fan circuit,p1153 ho2s insufficient switching bank 2 sensor 1,p1133 insuf. swit. sen. 1 or bank 1 sen. 1,p420 catalyst system efficiency below threshold bank 1,p152 o2sen. circuit high volt. bank 2 sen.1

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