Question about 2004 Chevrolet Colorado

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I have a 2004 Chev Colorado with PO 141 & PO 506 code

I have a 2004 Chev Colorado with a 5 cylinder and I am getting a PO 141 and a PO 506 codes. I have replaced the O2 sensor and still am getting the 141 code. the 506 code just statred this week. Need simple explained fix. Thank you.

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Hi, the P0141 is the O2 sensor, more info @ http://www.obd-codes.com/p0141 . Also P0506 code is Idle Air Controller problem - http://www.obd-codes.com/p0506

Posted on Jan 31, 2010

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1 Answer

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1 Answer

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2004 chev. silverado 6.0 liter. The engine code po300 and po322 came up. I reset the codes and po 322 came up again. I just changed the plugs approx. 400 mile ago. Could the codes come from a bad plug or...


Yes they could a PO300 is a generic misfire code. PO301 would be cylinder number 1 so on and so forth. check the resistance of your plug wires they should be approx. 7000 ohms per foot. it could also be a coil over plug. primary resistance of the cops should be 1-3 ohms. but since this is a misfire it would be your secondary. which should be between 20000-30000 ohms. hope I helped you out. Happy Motoring!

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Engine light comes on. Code is PO305 #5 cyl mis fire.


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