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Technical Q&A. HOW TO's, TSB's & Warranty Items Have a Problem? Technical Questions & Answers. HOW TO's & TSB's, Warranty Issues

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Old 03-14-2007, 12:08 AM   #1
yellow03
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2003 mach1 check engine light

the car has a little shake here and there but not real bad . but it keeps setting the check engine light when i scan it the codes are po605 internal control module read only memory error , po602 control module reprogramming error , p1211 i have know ideal what this means , p1690 i have know ideal what this means, and po301,po302,po305,po306,po307 which are all misfire. i dont know anything about codes and computers can u guys point me in the wright way i can really use the help.

the car has a jlt intake,borla cat-back,upr x-pipe,and steeda pullyes.
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Old 03-14-2007, 07:36 AM   #2
yellow03
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Re: 2003 mach1 check engine light

found out code p1211 injector control pressure sensor is above or below and code p1690 wastegate solenoid circuit malfunction ,wastegate control valve malfunction. still have know ideal were to start so i can still use some help thanks.
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Old 03-14-2007, 08:40 AM   #3
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Re: 2003 mach1 check engine light

Welcome to the Registry!

Wastegate? ummmmmm... You sure about that code? There is no wastegate on a naturally aspirated engine to my knowledge.

Do you have any blown fuses?

The misfire and injector pressure codes are consistent with "a little shake here and there" but the control module ones and the wastegate one, well those are puzzling.

Are you the original owner? Has someone installed a chip on the computer?
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Old 03-14-2007, 10:11 AM   #4
yellow03
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Re: 2003 mach1 check engine light

yea i know the wastegate makes is weird. and am the the 2nd onwer the 1st onwer was a older guy that left it stock only thing he did was wash it and drive it .
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Old 03-14-2007, 01:57 PM   #5
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Re: 2003 mach1 check engine light

Quote:
Originally Posted by yellow03 View Post
the car has a little shake here and there but not real bad . but it keeps setting the check engine light when i scan it the codes are po605 internal control module read only memory error , po602 control module reprogramming error , p1211 i have know ideal what this means , p1690 i have know ideal what this means, and po301,po302,po305,po306,po307 which are all misfire. i dont know anything about codes and computers can u guys point me in the wright way i can really use the help.

the car has a jlt intake,borla cat-back,upr x-pipe,and steeda pullyes.
The P0602 code "INDICATES" there's a programming error caused by the use of an unauthorized scan tool during some kind of PCM reprogramming procedure. Hmm, wonder what some monkey did there?? Those other codes have to do with a turbo as some have already pointed out and don't even apply to your car!! Don't know how those popped up.....unless somehow, you installed a truck tune into your PCM. What are you scanning/programming your car with??


BTW, powertrain DTC's (or any DTC's for that matter) AREN'T an end all fix all for repairing your car. The ONLY thing a DTC does is send a QUALIFIED technician to the area that's causing the problem, be it a sensor, a wiring problem, a related emissions problem, some kind of aftermarket junk on the car causing to problem, and the like.

My advice to you.......especially since you've got a strange programming error with your PCM......is to take it to a QUALIFIED/CERTIFIED mechanic who is properly trained to diagnose and fix your car, and step up to the plate and spend the money necessary to undo what you've done. Good luck!!
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Last edited by MrE; 03-14-2007 at 09:48 PM.
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Old 03-14-2007, 11:05 PM   #6
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Re: 2003 mach1 check engine light

i took the car to the dealer and the said that the jlt intake is the cause so i am putting the stock intake back on and going to see what happens . far as the computer its stock i still have the stock tune. i used my friends predator to pull the codes that i got i dont know were or how it pulled some of those codes. thanks for everones help i will reply to let you all know if it really was the jlt.
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Old 03-15-2007, 07:01 AM   #7
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Re: 2003 mach1 check engine light

Quote:
Originally Posted by yellow03 View Post
i took the car to the dealer and the said that the jlt intake is the cause so i am putting the stock intake back on and going to see what happens . far as the computer its stock i still have the stock tune. i used my friends predator to pull the codes that i got i dont know were or how it pulled some of those codes. thanks for everones help i will reply to let you all know if it really was the jlt.
What kind of vehicle does your friend drive??
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Old 03-15-2007, 12:33 PM   #8
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Re: 2003 mach1 check engine light

04 gt
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Old 08-06-2018, 02:51 PM   #9
HAEG
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Re: 2003 mach1 check engine light

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04 gt
What was the cure or final outcome of this issue? Having these same codes as well.
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