Check Engine Light - 9 Codes!
Thread Starter
Instructor
Joined: Feb 2006
Posts: 139
Likes: 0
From: Roseville CA
Check Engine Light - 9 Codes!
My check engine light went on about 3 weeks ago and I finally took it into the dealer today to see what the codes were. There were 9! Holy crap. I'm wondering if anyone has any insight as to exactly what these codes are. My tuner is an hour away. I am wondering how much a dealer could do on a car modified like mine. Any thoughts?
p0833 clutch pedal switch
p0442 evap small leak
p0621 generator L termanal circuit
p0454 puel tank pressure sensor
p0108 map circuit high voltage
p0455 evap large leak
p0175 bank 2 rich
p0174 bank 2 lean
p0171 bank 1 lean
On a side note, I had the car re dyno tuned about 4 months ago and there were not any codes thrown.
Mods
*MP122 magnacharger @ 5psi
*LG pro Z06 longtube headers with highflow cats
*Z06 stock exhaust
*mild to wild switch
*Cam spec= 224/228 .581/.588 114lsa
*TSP ported heads w/ stock width head gaskets
*K&N Z06 filter element
p0833 clutch pedal switch
p0442 evap small leak
p0621 generator L termanal circuit
p0454 puel tank pressure sensor
p0108 map circuit high voltage
p0455 evap large leak
p0175 bank 2 rich
p0174 bank 2 lean
p0171 bank 1 lean
On a side note, I had the car re dyno tuned about 4 months ago and there were not any codes thrown.
Mods
*MP122 magnacharger @ 5psi
*LG pro Z06 longtube headers with highflow cats
*Z06 stock exhaust
*mild to wild switch
*Cam spec= 224/228 .581/.588 114lsa
*TSP ported heads w/ stock width head gaskets
*K&N Z06 filter element
Safety Car
Joined: Jun 1999
Posts: 3,570
Likes: 3
From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
I had a C4 that threw a bunch of codes once and it was the battery going bad. Once the voltage drops below a certain point, the sensors would send a lower than normal voltage signal to the PCM/BCM which was interpreted as a fault.
If it were my car, I would look closely at the battery/cables first.
If it were my car, I would look closely at the battery/cables first.
Thread Starter
Instructor
Joined: Feb 2006
Posts: 139
Likes: 0
From: Roseville CA
Good Call. I actually put a new battery ion not to long ago. But there were some electrical problems when the car was getting dyno tuned. The car was showing almost no voltage, and was acting very odd. Sometimes starting, sometimes not. Sometimes the fob was recognized, sometimes not.
Long story, the mechanic cleaned out the fuse box and the car ran fine. I will look into the battery and fuses. Any more recommendations for electrical cleaning/checking?
Long story, the mechanic cleaned out the fuse box and the car ran fine. I will look into the battery and fuses. Any more recommendations for electrical cleaning/checking?
Drifting
Joined: Aug 2009
Posts: 1,412
Likes: 0
From: Texas 1,002rwhp/928rwtq
St. Jude Donor '09-'10
I would invest in a small hand held code reader, so you don't have to take your supercharged car to the dealer and have your tuner take a closer look at the calibration.
Last edited by aTX427; Jul 22, 2010 at 07:00 PM.
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Thread Starter
Instructor
Joined: Feb 2006
Posts: 139
Likes: 0
From: Roseville CA
I turned the car on today to see what the voltage was at and the dash said 14.2 volts. i checked it right away after start up. The car has been sitting for about 5 days because I forgot to latch the top down and it blew off and its been raining a lot.
