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OTC OBD I & II Scan Tool 3211

P2176 — Historical

What does this all mean? P2176 is the code. As per the user manual, "P2" means the code is powertrain-related and is a generic OBD II code as per SAE specification. The "1" designates the vehicle specific system. "76" is the fault designation. Here's what the rest of the information means:

P2176 Definition:
As shown in the photo, "throttle actuator control system — idle position not learned."
CURRENT (Highlighted in Blue):
The trouble the code indicated is active and can't be erased. In order to remove the DTC (diagnostic trouble code), the problem must be repaired.
HISTORY (Highlighted in Blue):
The code is also held in the computer's historical memory.
MIL (Highlighted in Blue):
The code caused the MIL — or Malfunction Indicator Light in the dash — to come on.
1/7 (Upper Right Corner):
Indicates this DTC is the first of seven reported.
ECM $10 (Upper Right Corner):
This is the location designator for the control module the code was reported from.
"MIL" and "REQUESTED" (Below):
Means the code requested the MIL be turned on.
"Since last key cycle" and "FAIL" (Below):
Related to the I/M (inspection/maintenance) Monitor, this means the circuit failed the test since the car was last turned on and off.
"Since DTCs erased" and "PASS/FAIL" (Below):
Also related to the I/M Monitor, I don't know what it means and I was unable to find an explanation, other than that whatever "PASS/FAIL" means, it occurred since the DTCs were last erased.
Code Criteria (Bottom Left Corner):
Now that little "i" with the blue circle around it in the bottom left corner is a useful tool. You press the corresponding button below it on the tool's keypad to get the Code Criteria, or the detailed conditions that caused the code to be thrown. Photo: Ryan King, 2018.

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