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2012 GMC Terrian 2.4L Ecotec LEA 125k Miles
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Discussion Starter · #1 ·
I have a foxwell NT-301 OBDII reader, I was looking at the live values and I need to admit I don't know what most the acronyms are. Anyone have the secret decoder ring for figuring these out?
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2012 GMC Terrian 2.4L Ecotec LEA 125k Miles
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Discussion Starter · #2 ·
RUNTM (Sec)
MIL_DIST (Km)
FRP (kPa)
EVAP_PCT (%)
FLI(%)
WARM UPS
CLR_DIST(Km)

02SLOC
02B1S1(V)
SHRTFTB1S1(%)
02B1S2(V)
SHRTFTBIS2(%)
OBDSUP

MAP(KPS)
RPM(rpm)
VSS(km/h)
SPARKADV()
IAT(C)
MAF(g/s)


FUEL SYS1
FUEL SYS2
LOAD POT(X)
ECT(C)
SHRTFTYX)
LONGFTYX)
 

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2012 GMC Terrian 2.4L Ecotec LEA 125k Miles
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Discussion Starter · #5 · (Edited)
These codes take the following format:

XXXXX
First unit identifies the type of error code:

Pxxxx for powertrain
Bxxxx for body
Cxxxx for chassis
Uxxxx for class 2 network

Second digit shows whether the code is manufacturer unique or not:

x0xxx for government-required code

x1xxx for manufacturer-specific code

Third digit shows us what system the trouble code references:

xx1xx/xx2xx show air and fuel measurements

xx3xx shows ignition system
xx4xx shows emissions systems
xx5xx references speed/idle control
xx6xx deals with computer systems
xx7xx/xx8xx involve the transmission
xx9xx notates input/output signals and controls

Digits four and five show the specific failure code.

xxx00 to xxx99 - these are based on the systemd defined in the third digit.



Mass Airflow (MAF) Parameter Identification Data (PID) information. With then egine at idle, the MAF’s PID value should read anywhere from 2 to 7 grams/second (g/s)

Fuel Rail Pressure (FRP) Sensor. The high pressure system develops pressure mechanically, so closed loop control is even more critical than on other feedback systems.
 

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2012 GMC Terrian 2.4L Ecotec LEA 125k Miles
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Discussion Starter · #8 ·
I found this comprehensive link:
 
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