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Pontiac Forum: P0403 code EGR circuit malfunction
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Old June 13th, 2018, 08:30 PM
Kurth Kurth is offline
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P0403 code EGR circuit malfunction

P0403 code replaced egr and reset computer keeps coming back, somebody spliced a new 5 wire connector in the past i didn't notice it til last night the car was bought used 8 years ago. Has anyone ever come across this problem if so i would love some info we need to get the car emissioned before the 25th of june.
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Old June 14th, 2018, 10:00 AM
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read the list of causes, did you check the circuit with a test light or voltmeter?
https://www.obd-codes.com/p0403
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Old June 18th, 2018, 08:07 PM
Kurth Kurth is offline
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Quote:
Originally Posted by melsg5 View Post
read the list of causes, did you check the circuit with a test light or voltmeter?
https://www.obd-codes.com/p0403
I did test the circuit and all tests good so now im stumped well i guess i will have to take it in! Not what i was hoping for.
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