Question about 1997 GMC Sierra

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DTC Codes 1997 gmc sierra K1500 DTC Codes C0502, P0113and P1111... What do these mean?

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P0113-Intake Air Temperature (IAT) Sensor Circuit High Voltage

P1111-Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage

I am unable to dig up any C code with that number.

Posted on Sep 04, 2008

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Posted on Jan 02, 2017

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Odd one this to have P1111 as well.

According to my data P1111 is all dtc checks compleated, http://www.bluejag.co.uk however some websites show it as a Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage, I'm fairly sure that the latter is incorrect.

check the basics first plugs, leads, corroded ground connections etc then its a bit of a guessing game


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P0301 = Misfire detected - cylinder 1
P1313 = Misfire rate catalyst damage - bank 1
P1316 = Misfire excess emission


Possible causes (as per JTIS):

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Worn camshaft / broken valve spring(s)
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Fuel injector(s) restricted / leaking
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(Injector DTCs also flagged)
Spark plug failure / fouled / incorrect gap
ECM to ignition coil primary circuit fault
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flagged)
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