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Old 07-02-2016, 12:02 PM   #1
rodrig7521
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power engine reduced and Service Stabilitrak

I was about to enter the highway and the power reduce ,Service Stabilitrak and check engine light turned on. I let the car sit for 30 min then everything went away.

MODS - INTAKE , CAM, LONG TUBE HEADERS


Bought a check engine light reader an it showed 6 codes


P0068 - Manifold Absolute Pressure/Mass Air Flow - Throttle Position Correlation

P0156- Oxygen Sensor Circuit Bank 2 Sensor 2 (See P2272, P2273)

P0056 -Heated Oxygen Sensor Heater Control Circuit Bank 2 Sensor 2

P015D -O2 Sensor Delayed Response - Lean to Rich (Bank 2 Sensor 1)

U0401 - Invalid Data Received From Engine Control Module / Powertrain Control Module A

C0242 -Powertrain Control Module Indicated Traction Control

Last edited by rodrig7521; 12-18-2016 at 01:55 PM.
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Old 07-02-2016, 12:38 PM   #2
rodrig7521
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might just change the 02 sensor today just to see. dealership wont open till Tuesday. what you guys think ?
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Old 07-02-2016, 01:28 PM   #3
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check the ground connection.
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Old 07-02-2016, 04:21 PM   #4
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I think if the CEL did not reappear, don't chase parts trying to fix the problem. Did you get the car tuned after the LTh's were installed? Maybe start with the simplest causes like faulty grounds (there are a few, so it's a PITA to track down sometimes) or a dirty MAF sensor. Code readers are a must for any shadetree, but I've found that without more knowledge, chasing parts gets expensive and potentially frustrating.
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Old 07-02-2016, 05:44 PM   #5
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where can i find all of the ground points an yes car is tuned

Last edited by rodrig7521; 07-02-2016 at 06:11 PM.
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Old 07-02-2016, 06:18 PM   #6
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take it to the dealership
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Old 07-04-2016, 01:57 PM   #7
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i would start with the u code first,possibly a bad ground,the c code is just telling you it turned on the light. Check grounds on bank 2 perhaps a harness rubbed through good luck bro
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Old 07-05-2016, 10:15 AM   #8
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Places do not always tune out the delayed response from the front O2 sensors tuning off the code it throws which may have been the cause of all the others as they pile on, time to talk to the tuner........ It takes then 10 seconds hooked up to turn off that code if they have not it will be back....
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Old 07-05-2016, 12:13 PM   #9
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Had the same problem after my header install, I cracked a spark plug
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Old 07-05-2016, 12:42 PM   #10
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The Bank 2 codes shouldn't be on. Tuner needs to turn them off, since you don't have stock cats.
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Old 07-06-2016, 11:17 AM   #11
rodrig7521
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just noticed the codes P015D, P0056 and P0156 are permanent on the code reader.

P0056 -Heated Oxygen Sensor Heater Control Circuit Bank 2 Sensor 2

P0156- Oxygen Sensor Circuit Bank 2 Sensor 2 (See P2272, P2273)

P015D -O2 Sensor Delayed Response - Lean to Rich (Bank 2 Sensor 1)




i decided to just go ahead an replace both sensors, car is running better then before, if it happens again i will post on here. i deleted the other codes to see if it will show again later in the future.
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Old 07-06-2016, 11:47 AM   #12
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MODS - INTAKE , CAMS, LONG TUBE HEADERS


Bought a check engine light reader an it showed 6 codes


P0068 - Manifold Absolute Pressure/Mass Air Flow - Throttle Position Correlation (tune or gorund, electrical fault, dirty sensor, bad sensor)

P0156- Oxygen Sensor Circuit Bank 2 Sensor 2 (See P2272, P2273)
(no cats? tune)

P0056 -Heated Oxygen Sensor Heater Control Circuit Bank 2 Sensor 2
(Tune)

P015D -O2 Sensor Delayed Response - Lean to Rich (Bank 2 Sensor 1)
(Tune)

U0401 - Invalid Data Received From Engine Control Module / Powertrain Control Module A
(electrical problem, possible faulty ecu, bad ground, this is not a common code to get after headers or a tune)

C0242 -Powertrain Control Module Indicated Traction Control
(this will most likely be a result of the U0401 code or vise versa)

I don't mean to be disrespectful towards your tuner, but if he forgot to disable the 2nd O2 sensors when removing the CATS and compensate for the 1st O2s sensor delay, than you should find a new tuner. makes me wonder if there was any actual tuning involved...
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Old 07-06-2016, 11:56 AM   #13
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I would have started with the MAF sensor (easiest first). Get some CRC MAF sensor cleaner and just follow the directions. Worked for me!
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Old 08-27-2016, 04:09 AM   #14
rodrig7521
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thanks everyone for your input, i am in korea now so the car will just sit there for a year :(
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